题目内容
（请给出正确答案）
Babies often ______ down when they are learning to walk.
A．drop
B．fall
C．slip
D．jump
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更多“Babies often ______ down when …”相关的问题
Flying foxes have babies once a year, giving birth to only one at a time. At first the mother has to carry the baby on her breast wherever she goes. Later she leaves it hanging up, and brings back food for it to eat. Sometimes a baby falls down to the ground and squeaks(尖叫) for help. Then the older ones swoop (俯冲) down and try to pick it up. If they fail to do so, it will die, Often hundreds of dead baby bats can be found lying on the ground at the foot of a tree.
The passage tells us that there is no difference between, the flying fox and the ordinary hat in ______. ()
A．their size
B．their appearance
C．the way they rest
D．the kind of food they eat
Sharks are different from other fish. For example, other fish have skeletons made of hard bones. Sharks have skeletons made of cartilage. In addition, most fish have a special organ called a swim bladder to stop them from sinking but sharks do not. If a shark does not swim constantly, it sinks. Shark babies grow inside eggs. The baby sharks are called pups.
Most sharks eat fish. Some also eat seals and other sharks. Many people are afraid of sharks be cause of their reputation as' man-eaters'. However, there are fewer than one hundred shark attacks on humans in the world each year.
Humans are the sharks' worst enemies. Fishermen kill them because of their valuable dorsal fins. Often, they catch a shark, cut off its fin and throw it back into the sea. If a shark has no fin, it dies because it cannot swim. Scientists believe that humans kill more than one million sharks every year.
Sharks are ______.
A．humans' friends
B．man's enemies
C．the world's largest fish
D．not the same as other fish
Moreover, the traffic-safety agency estimates that even among parents who always strap their children in, 85% are not doing it properly. They often don't know where best to place the kids, don't use the proper restraint for their age and weight, or don't install the safety seats properly. Despite the reports about front seats collapsing onto back seats when certain car models get in accidents, the safest place in the car for any child up to the age of 12 is still the back seat. Babies up to 9 kg and one year old should ride in rear-facing infant seats.
Never place a child under age 12 in the front seat with a working passenger-side air bag. These devices are discharged at 320 km/h and can be triggered by low-speed fender benders. They have killed 77 kids in the U.S. since 1993. If you must place a child in front, make sure the passenger-side bag is switched off.
Children over age one should ride in forward-facing safety seats with a five-point harness system. A child who weighs at least 18 kg or at least 1m high can graduate to a booster seat that elevates her so that the standard shoulder and lap belt fits properly.
What does the author mainly discuss in this passage？
A．How to avoid car crash.
B．How to design safer baby equipment.
C．How to educate children properly.
D．How to properly secure children in the car.
Moreover, the traffic-safety agency estimates that even among parents who always strap their children in, 85% are not doing it properly. They often don't know where best to place the kids, don't use the proper restraint for their age and weight, or don't install the safety seats properly. Despite the reports about front seats collapsing onto back seats when certain car models get in accidents, the safest place in the car for any child up to the age of 12 is still the back seat. Babies up to 9 kg and one year old should ride in rear-Facing infant seats.
Never place a child under age 12 in the front seat with a working passenger-side air bag. These devices are discharged at 320 km/h and can be triggered by low-speed fender benders. They have killed 77 kids in the U.S. since 1993. If you must place a child in front, make sure the paasengar-side bag is switched off.
Children over age one should ride in forward-facing safety seats with a five-point harness system. A child who weighs at least 18 kg or at least 1m high can graduate to a booster seat that elevates her so that the standard shoulder and lap belt fits properly.x
What does the author mainly discuss in this passage？
A．How to avoid car crash.
B．How to design safer baby equipment.
C．How to educate children properly.
D．How to properly secure children in the ear.
Radesky has studied the use of mobile phones and tablets at mealtimes by giving mother-child pairsa food-testing exercise. She found that mothers who sued devices during the exercise started 20percent fewer verbal and 39 percent fewer nonverbal interactions with their children. During aseparate observation, she saw that phones became a source of tension in the family. Parents wouldbe looking at their emails while the children would be making excited bids for their attention. Infants are wired to look at parents’ faces to try to understand their world, and if those faces areblank and unresponsive—as they often are when absorbed in a device－it can be extremely7disconcerting foe the children. Radesky cites the “still face experiment ” devised by developmentalpsychologist Ed Tronick in the 1970s.
In it, a mother is asked to interact with her child in a normalway before putting on a blank expression and not giving them any visual social feedback; The childbecomes increasingly distressed as she tr ies to capture her mother ’s attention. "Parents don&39;t have tobe exquisitely parents at all times, but there needs to be a balance and parents need to be responsiveand sensitive to a child ’s verbal or nonverbal expressions of an emotional need," says Rade sky. On the other hand, Tronick himself is concerned that the worries about kids&39; use of screens are bornout of an “oppressive ideology that demands that parents should always be interacting children: “It’s based on a somewhat fantasized, very white, very upper-middle-class ideology thatsays if you’re failing to expose your child to 30,000 words you are neglecting them.”
Tronickbelieves that just because a child isn ’t learning from the screen doesn ’t mean there －particularly if it gives parents time to have a shower, do housework or simply have a break fromtheir child. Parents, he says, can get a lot out of using their devices to speak to a friend or get somework out of the way. This can make them feel happier, which lets then be more available to theirchild the rest of the time.
26.According to Jenny Radesky, digital products are designed to ______.
A.simplify routine matters
B.absorb user attention
C.better interpersonal relations
D.increase work efficiency
Radesky’s food -testing exercise shows that mothers ’ use of devices ______.A.takes away babies ’ appetite
B.distracts children ’s attention
C.slows down babies ’ ver bal development
D.reduces mother-child communication
Radesky’s cites the “still face experiment ” to show that _______.A.it is easy for children to get used to blank expressions
B.verbal expressions are unnecessary for emotional exchange
C.children are insensitive to changes in their parents ’ mood
D.parents need to respond to children's emotional needs
The oppressive ideology mentioned by Tronick requires parents to_______.A.protect kids from exposure to wild fantasies
B.teach their kids at least 30,000 words a year
C.ensure constant interaction with their children
D.remain concerned about kid's use of screens
According to Tronick, kid ’s use of screens may_______.A.give their parents some free time
B.make their parents more creative
C.help them with their homework
D.help them become more attentive
A．that
B．what
C．whose
D．why
A．what
B．which
C．that
D．/
A．where
B．that
C．which
D．what
