He never hesitates to make such criticisms________are considered hel-考呗网题库移动版

单选题 He never hesitates to make such criticisms________are considered helpful to others．

A．that
B．which
C．as
D．what

参考答案C

解析: C。提出这种对他人有益的批评时，他从不会犹豫。考查定语从句。先行词criticisms之前有such修饰，关系代词只能选择as。

单选题 Cohn married my sister and I married his broker,________makes Cohn and me double in-laws．

A．what
B．which
C．that
D．it

单选题 The problem of________to select as his successor was quickly disposed of．

A．what
B．which
C．whom
D．how

单选题 ______man can now create radioactive elements, there is nothing he can do to reduce their radioactivity．

A．As
B．Whether
C．While
D．Now that