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[单选题]
The Centers for Disease Control says a pool or hot tub that's well maintained and
A.trip
B.move
C.carry
D.transport
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题目内容
（请给出正确答案）
如果结果不匹配，请 联系老师 获取答案
题目内容
（请给出正确答案）
A.trip
B.move
C.carry
D.transport
如果结果不匹配，请 联系老师 获取答案
更多“The Centers for Disease Contro…”相关的问题
The passage centers on______.
A．memory
B．two kinds of memory
C．short-term memory
D．an experiment on students
This passage centers mainly on ______ .
A．harnessing energy through chemistry
B．our last source of power
C．how water power is produced
D．the amount of solar energy that can be utilized
A.workpiece
B.cutter
C.abrasive wheel
D.wroktable
Which of the following is the best definition of a civilization？
A．Neolithic towns and cities
B．Types of complex cultures
C．An agricultural community
D．Large population centers
Although trains were a popular means of travel for some time, automobiles slowly began to take their place. Automobile travel caused problems for city hotels, which did not have enough parking space for so many cars.
People who traveled by automobile needed a different kind of hotel. They needed places to stay that were near highways and had room to park. Motorists did not like to drive in heavy city traffic to reach a hotel. The answer to the motorists' problems came when a new kind of hotel was built. These new buildings were called motels, a word made from the first part of MOTORIST and the last part of HOTELS.
Motels were much smaller than hotels. Built on ground level, often in separate units, they were more convenient for people traveling. The separate units also made them quieter than hotels, best of all, there was more than enough room for cars to park. ,
Now, many big hotels in the cities are being torn down. They can no longer make enough money to stay in business. In their place, many small motels have been built on the outskirts(近郊) of cities. Motels have become a big business in the United States.
The first hotels were built______.
A．with hundreds of rooms
B．around the city centers
C．near railway stations
D．quite close to roads.
all must be at least 21 years old. This is one example of how the Open 3 University is different from all other universities. Its students must either work full-time or be at home all day. For instance, mothers of families do not have to pass any examinations before they are accepted as students. This is why the university is called “open”. The university was started in order to help a known group – people who missed having a university education when they were young.
The first name for the Open University was “the University of the Air”. The idea was to teach “on the air”, in other words on radio and television. Most of the teaching is done like this. Radio and television have brought the classroom into people’s homes. But this, on its own, is not enough for a university education. The Open University students also receives advice at one of 283 study centers in the country, 36 weeks of the year he or she has to send written work to a “tutor”, the person who guides his or her studies. The student must also spend 3 weeks every summer as a full-time student. Tutors and students meet and study together, as in other universities.
1. The purpose of the Open University is to ().
A. help the young to go to school
B. help those who want to study the university
C. help those who are younger than 21 years old
D. help those who had missed the chance to study when they were young
2. “On the air” means ().
A. on the show
B. on radio and TV
C. on the flight
D. flying everywhere
3. The students at the Open University have their education ().
A. both at home and at some study centers
B. through many kinds of examinations
C. with their written work only
D. in the local centers only
4. “Tutor” in the second paragraph means ().
A. the person who is in charge of various exams
B. the person who is to help students get through exams
C. the person who provides guidance to students in their studies
D. the person who teaches students face to face
5. Which of the following is implied but not stated？ ()
A. Everyone wants to go to such an open university
B. Every country needs such a university
C. Students must be over 21 years old in the Open University
D. The Open University really benefits a lot those who did not have the chance to have university education
It must have taken a great prehistoric thinker to imagine two thin slices of log connected, at their centers by a string stick, this would roll along just as the logs did, yet be much lighter and easier to handle, thus the wheel and axle came into being and with them the first cart.
The wheel is important because ______ .
A．it was man' s first real invention
B．all transportation depends on it
C．every machine depends on it
D．both B and C
A.it was man’s first real invention
B.all transportation depends on it
C.every machine depends on it
D.both B and C
As time went on, hot sun and cool rains made the rock split and break to pieces. Sea waves dashed against the rock. In this way, soil and sand came into being.
Nothing lived on the naked soil. And then the wind and birds brought plant seeds, spiders and other little creatures there. Only plants could grow first. Only they, in sunlight, could produce food from the minerals of the soil, water and air. While many animals landed on the island, they could find no food. A spider spun its web in vain, because there were no insects for its web to catch, In sects couldn' t stay until there were plants for them to eat. So plants had to be the pioneer life on this new island.
The passage centers on ______.
A．how an undersea volcano broke out
B．how an island rose up in the sea
C．how soil was formed on a new island
D．how life began on a volcano-produced island
About half of the infant and maternal deaths in developing countries could
be avoided if women had used family planning methods to prevent high risk ____1____pregnancies, according to a report publishing recently by the Johns Hopking ____2____University.
The report indicates that 5.6 million infant deaths and 2,000,000 maternal
Deaths could be prevented this year if women chose to have theirs children ____3____within the safest years with adequate intervals among births and limited their ____4____families to moderate size.
This amounts to about half of the 9.8 million infant and 370.000 maternal
deaths in developing countries, excluded China, estimated for this year by ____5____the United Nation’s Children’s Fund and the US Centers for Disease Control respectably. China was excluded because very few births occur in the high ____6____risk categories.
The report says that evidences from around the world shows the risk of ____7____maternal or infant ill and death is the highest in four specific types of ____8_____pregnancy; pregnancies before the mother is 18 year old; those after the ____9____mother is 35 years old; pregnancies after four births; and those lesser than ____10____two years apart.
