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The heavy snow in early spring may__________the growth of the wheat．A.hold onB.ho

The heavy snow in early spring may__________the growth of the wheat．

A.hold on

B.hold up

C.hold out

D.hold in

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更多“The heavy snow in early spring…”相关的问题

第1题

There’s a heavy ____. It’s ____（）

A.snow, snowy

B.snowy, snowing

C.snows, snowy

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第2题

From the story we know that ______ come and then there is a heavy rain.A．sunshine and snow

From the story we know that ______ come and then there is a heavy rain.

A．sunshine and snow

B．black clouds

C．summer and winter

D．spring and autumn

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第3题

"Another gray day,gray and gloomy,"she muttered,though really the rain was

A.lack of rain

B.heavy storm

C.strong wind

D.heavy snow

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第4题

We’ve just heard a warning on the radio that a heavy snow is _____ to come this evening.

A.likely

B. convenient

C. probable

D. believable

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第5题

We are sorry to inform you that Dalian International Airport has been closed due to the snow there.（）

A.big

B.large

C.stormy

D.heavy

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第6题

meal,sweater,heavy三个单词中，哪个单词ea发音不一致（）

A.sweater

B.heavy

C.meal

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第7题

The Antarctic(南极洲)is actually a desert.It is the only continent on the earth without a river or a lake.The Antarctic is all ice all year round.The warmest temperature ever recorded there is zero,at the South Pole.Explorers used to think that a place so cold would have a heavy snowfall.But less than ten inches of snow falls each yeat.That is less than half an inch of water.Ten times that much moisture falls in parts of the Sahara.The little snow that falls in Antarctic never melts.It continues to pile up deeper and deeper year after year.When the snow gets to be about eighty feet deep it is turned to ice by the weight of the snow above it.1.Antarctica is called a desert because it has little moisture and no lakes or rivers.A.TB.F2.The Antarctic has ten times as much moisture as the Sahara.A.TB.F3.The temperature in the Antarctic is always above zero.A.TB.F4.The snow In Antarctic is very deep because it piles up year after year.A.TB.F5.The snow turns to ice when the snow above it is heavy enough.A.TB.F

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第8题

Lead deposits, which accumulated in soil and snow during the 1960's and 70's, were primari

ly the result of leaded gasoline emissions originating in the United States. In the twenty years that the Clean Air Act has mandated unleaded gas use in the United States, the lead accumulation worldwide has decreased significantly.

A study published recently in the journal Nature shows that air-borne leaded gas emissions from the United States were the leading contributor to the high concentration of lead in the snow in Greenland. The new study is a result of the continued research led by Dr. Charles Boutron, an expert on the impact of heavy metals on the environment at the National Center for Scientific Research in France. A study by Dr. Boutron published in 1991 showed that lead levels in arctic (北极的) snow were declining.

In his new study, Dr. Boutron found the ratios of the different forms of lead in the leaded gasoline used in the United States were different from the ratios of European, Asian and Canadian gasolines and thus enabled scientists to differentiate the lead sources. The dominant lead ratio found in Greenland snow matched that found ingasoline from the United States.

In a study published in the journal Ambio, scientists found that levels in soil in the Northeastern United States had decreased markedly since the introduction of unleaded gasoline.

Many scientists had believed that the lead would stay in soil and snow for a longer period.

The authors of the Ambio study examined samples of the upper layers of soil taken from the same sites of 30 forest floors in New England, New York and Pennsylvania in 1980 and in 1990. The forest environment processed and redistributed the lead faster than the scientists had expected.

Scientists say both studies demonstrate that certain parts of the ecosystem respond rapidly to reductions in atmospheric pollution, but that these findings should not be used as a license to pollute.

The study published in the journal Nature indicates that

A．the Clean Air Act has not produced the desired results.

B．lead deposits in arctic snow on the increase.

C．lead will stay in soil and snow longer than expected.

D．the U.S. is the major source of lead pollution in arctic snow.

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第9题

Considered as a continuous body of fluid, the atmosphere is another kind of ocean. Yet, in

view of the total amount of rain and snow on land areas in the course of a year, one of the most amazing water facts is the very small amount of water in the atmosphere at any given time. The volume of the lower seven miles of the atmosphere--the realm of weather events- is roughly four times the volume of the world's oceans. But the atmosphere contains very little water. It is chiefly in the form. of invisible vapor, some of which is carried over land by air currents. If all vapor suddenly fell from the air onto the earth's surface, it would form. a layer only about one inch thick. A heavy rainstorm on a given area may use up only a small percentage of the water from the air mass that passes over. How, then, can some land areas receive more than 400 inches of rain per year？ How can several inches of rain fall during a single storm in a few minutes or hours？ The answer is that rain yielding air masses are in motion, and as the driving air mass moves on, new moist air takes its place.

The basic source of most water vapor is the ocean, evaporation, vapor transport, and precipitation (陈雨) make up the continuous movement of water from ocean to atmosphere to land and back to the sea. Rivers return water the sea. In an underground arc (弧) of the cycle, flowing bodies of water discharge some water directly into rivers and some directly to the sea.

What might have been discussed before this passage？

A．The ocean.

B．The earth.

C．The rainfall.

D．The atmosphere.

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第10题

It’sgoingto__inShouguang（）

A.snow

B.snowing

C.snowy

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