Question

英语高手进

1)____to space travelers is high acceleration or deceleration forces.
A.That can be dangerous B.What can be dangerous C.They can be dangerous D.It can be dangerous
注:选“B”，并说明不选其它答案的理由,且翻译。

2）____unstable and explodes as a supernova is not known.
A.For a star to become B.How a star becomes C.A star becomes D.That a star is becoming
注:选“B”，并说明不选其它答案的理由,且翻译。

3）____that the professor's strictness with him is not to punish a careless student but to teach him how to be precise.
A.It was dawned on Joseph B.It dawned on Joseph
注:选“B”，并说明不选A答案的理由,且翻译。

4)___the students think it their duty to study hard has laid the foundation for the university's high reputation.
A.That all B.What C.All that D.What all
注:选“A”，并说明不选其它答案的理由

5)____was the "curiosity of all mankind to explore the unknown."
A.That moved the human spirit B.What moved the human spirit
注:选“B”，并说明不选A答案的理由

若解释合理，有分哦！

Answer 1

1)____to space travelers is high acceleration or deceleration forces.
A.That can be dangerous B.What can be dangerous C.They can be dangerous D.It can be dangerous
【解析】答案选B。
本题考查的是What引导的名词性从句[主语从句]。What在从句中作主语。
A项that在名词性从句中不能做句子成分[主语、宾语和表语]； C项和D项都缺少连接词。
【翻译】太空旅行的危险之处是高加速和减速。
2）____ unstable and explodes as a supernova is not known.
A.For a star to become B. C.A star becomes D.That a star is becoming
【解析】答案选B。
A项中for是介词，介词短语不能作主语；C项是句子，但没有连词。D项连词that引导的句子意思与后面的not known不一致。
【翻译】一颗恒星是如何变得不稳定而后发生爆炸成为超新星还不为人所知。
3）____that the professor's strictness with him is not to punish a careless student but to teach him how to be precise.
A.It was dawned on Joseph B.It dawned on Joseph
【解析】答案选B。
It dawned on sb that … 是个固定句式，意思是“某人突然明白（理解、意识、领悟）到……”如果选A则没有什么意思，既不是强调句式，也不符合这一固定用法。
【翻译】Joseph突然意识到教授对他的严格要求不是为了惩罚一个粗心的学生，而是教他如何做到严谨精确。
4)___the students think it their duty to study hard has laid the foundation for the university's high reputation.
A.That all B.What C.All that D.What all
【解析】答案选A。
A选项中that引导的是主语从句，to study hard 是think的真正宾语，it是逻辑宾语。其中all可以省略不要。B项中what引导名词性从句时要在从句中作成分（主语、宾语或表语），而此句中不缺少句子成分。C项all不能当做连词引导句子。D项同B项一样错误。
【翻译】学生们后认为努力学习是他们的责任已经给大学里获得盛誉奠定了基础。
5)____was the "curiosity of all mankind to explore the unknown."
A.That moved the human spirit B.What moved the human spirit
【解析】答案选B。
选项A中that引导名词性从句时不能再承担句子的主语。
【翻译】驱动人类精神的是全体人类对未知领域探索的好奇心。