the scientists have done lots of research on Mars.there is still much waiting to be discovered.A. If B. Since C. Unless D. Though 题目和参考答案——青夏教育精英家教网—

题目内容

（2017·浙江温州· 6）________ the scientists have done lots of research on Mars，there is still much waiting to be discovered.

A. If B. Since C. Unless D. Though

练习册系列答案

1加1阅读好卷系列答案

相关题目

--- What will the weather be like tomorrow?

--- It ______ be rainy, cloudy or sunny. Who knows?

A. must B. might C. shall D. should

一Would you mind going to the park with us this Sunday?

一 . I haven't been outdoors these days. I can't wait!

A. Sorry, I can't B. Sure, I'd love to

C. Certainly not D. My pleasure

It’s hard to hold back the tears. This is 　　　 thing I’ve ever heard.

A. sad B. sadder

C. saddest D. the saddest

—These people are really nice.

— Yes, they ______ show respect for our feelings.

A. seldom B. never C. always D. already

— This photo makes me think of ________ trip to the Great Wall last year.

— Yeah, we had a great time there.

A. a B. an C. the D. /

The hotel is very old. It’s one of buildings in the city.

A. old B. older C. oldest D. the oldest

His name is James, but he usually calls____ Jim .

A. he B. him C. his D. himself

一Shall we go for a picnic this weekend?

一 .

A. Sounds great B. You're welcome

C. You are right D. It's a pity

试题分类