If it rains, we should not go out, but the sky ______ perfectly clear now.

If it rains, we should not go out, but the sky ______perfectly clear.

A．is

B．will be

C．was

D．had been

If it rains, we should not go out, but the sky _________perfectly clear.

[A]is

[ B] will be

[ C] was

[ D] had been

A.A.If it rains

B.B.Had it rained

C.C.Were it rain

D.D.Should it rain

听力原文：W：There is a lot of rain this year, isn't it？

M：Yes. It rains too much. We have few sunny days this summer. But it's good to the crops.

Q：What is the weather like？

(13)

A．It is rainy.

B．It is sunny.

C．It is fine.

D．It is cloudy.

听力原文：W: But what shall we do if it rains？

M: We'll have to count on good weather. But if it does rain, the whole thing will have to be cancelled.

Q: What do we learn from the conversation？

(19)

A．The speakers will not do as planned in case of rain.

B．The speakers will postpone their program if it rains.

C．The weather forecast says it will be fine.

D．The weather doesn't count in their plan.

the party will be ruined.

W: What does it matter？ We can always hold it indoors.

Q: What are the man and woman hoping to do？

(13)

A．Repair the other door.

B．Visit some ruins.

C．Have an outdoor party.

D．Catch the Saturday train.

听力原文：M: If it rains on Sunday, the party will be ruined.

W: Oh, it doesn't matter. We can always hold it indoors.

What are the man and the woman hoping to do？

A．Repair the other door.

B．Visit some ruins.

C．Have an outdoor party.

D．Catch the Sunday train.

听力原文：M：Look at the sky．The cloud is gathering．I should have brought the umbrella．

W：The rain in summer will not last long and we are almost there．We can make it.

Q：What can be inferred about the weather？

(15)

A．The rain stopped soon.

B．It has been raining a day.

C．It is about to rain.

D．The rains are very heavy.

bring us the rains we all hoped for, and although the Central Valley doesn’t generally experience the atmospheric sound and lightning that can accompany those rains, it’s still important for parents to be able to answer the youthful questions about thunder and lightning.

The reason these two wonders of nature are so difficult for many adults to explain to children is that they are not very well understood by adults themselves. For example, did you know that the lightning we see flashing down to the earth from a cloud is actually flashing up to a cloud from the earth？ Our eyes trick us into thinking we see a downward motion when it’s actually the other way around. But then, if we believed only what we think we see, we’d still insist that the sun rises in the morning and sets at night.

Most lightning flashes take place inside a cloud, and only a relative few can be seen jumping between two cloud or between earth and a cloud. But, with about 2,000 thunderstorms taking place above the earth every minute of the day and night, there’s enough activity to produce about 100 lightning strikes on earth every second.

Parents can use thunder and lightning to help their children learn more about the world around them. When children understand that the light of the lightning flashing reaches their eyes almost at the same moment, but the sound of the thunder takes about 5 seconds to travel just one mile, they can begin to time the interval between the flash and the crash to learn how close they were to the actual spark.

第36题：According to the author, in the area of the Central Valley, ________.

A) rains usually come without thunder and lightning

B) it is usually dry in April

C) children pay no attention to natural phenomena

D) parents are not interested in thunder and lightning

A. must be

B. should be

C. must have been

D. would have been