游客
题文

It puzzles the scientists _____ some mammals produce their young _____ others lay eggs.

A.that; while B.what; while C.that; as D.what; as
科目 英语   题型 单选题   难度 中等
知识点: 从属连词 主语从句综合
登录免费查看答案和解析
相关试题

When we were at school, we made a _________ to work together in the future, but he broke his promise later.

A.commitment B.contribution
C.presentation D.consequence

The case will go back to the judge if both sides refusing to give in can’t reach a(n) __________.

A.agreement B.promise C.balance D.Judgment

The bell ______ the end of the period rang,________ our heated discussion.

A.indicating; interrupted B.indicated; interrupting
C.indicating; interrupting D.indicated; interrupted

Out there, in the midst of the snow,______ in long, black clothes.

A.sat a woman B.sitting a woman was
C.a woman sat D.a woman was sitting

—Has every student passed the final exam?
—No. Unfortunately, _______ three from each class have failed.

A.no more than B.at least
C.not in the least D.at most

Copyright ©2020-2025 优题课 youtike.com 版权所有

粤ICP备20024846号