Most electronic devices of this kind, ______manufactured for such pu-考呗网题库移动版

单选题 Most electronic devices of this kind, ______manufactured for such purposes, are tightly packed．

A．that are
B．as are
C．which is
D．it is

参考答案B

解析: B。为了此种目的而生产的电子设备大部分都是密封的。
考查定语从句。逗号之后为非限定性的定语从句，且先行词为物，只能用which或者as引导；同时，先行词为复数，所以从句的谓语动词也要用复数。

单选题 You can arrive in Beijing earlier for the meeting ______ you don't mind taking the night train．

A．provided
B．unless
C．though
D．until

单选题 I will give this dictionary to ________wants to have it．

A．whomever
B．someone
C．whoever
D．anyone

单选题 Living in the central Australian desert has its problems, ______obtaining water is not the least．

A．of which
B．for what
C．as
D．whose