Why do we use the weather satellites to take pictures of the atmosphere?Because______．

A．the weather satellites can do it easily

B．clouds form. there

C．the weather forms there

D．the pictures can forecast the weather

[主观题]Why we use StringBuffer when concatenating strings?

[问答题]Do you think we will have good weather?

[主观题]Why we use index in database? How many indexes is the maximum in onetable as your suggestion?

[单选题]25． Why do we call the sun"a life-giving star"?A． Because it gives us warmth．B． Because there are some living things on it．C． Because plants and animals can't live without it．D． Because people have to live in the dark without it．

[单选题]Weather _______， we‘ll go out for a walk. A. permitted B. permitting C. permits D. for permitting

[单选题]What [dreadful]weather we have these days!A.terribleB.wonderfulC.niceD.cold

[填空题] （）terrible weather we’ve been having these days！

[单选题]9．It was________ bad weather ________ we had to stay at home．A． so; thatB． such a; so ．C． s，o a; thatD． such; that

[单选题]We use ________ when proceeding in dense fogA．auto-steeringB．gyro-pilotC．rudder gearD．hand-steering

[单选题]We can use the word processor to ______ your documents.A．editB．computeC．translateD．UnloadA．B．C．D．