All workers should carry out their normal duties during the safety i-考呗网题库移动版

单选题 All workers should carry out their normal duties during the safety inspection tomorrow__________ otherwise instructed.

A．through
B．unless
C．despite
D．about

参考答案B

解析: 句子表示“如果没有收到其他的指示”，因此连词B意为“如果不……”为正确的答案。

单选题 Passengers can__________the amount of light they receive by using the black switch located on their overhead panel.

A．supervise
B．control
C．exchange
D．trade

单选题 __________fully staffed, the office will have to accommodate the workspace and equipment needs of over sixty workers.

A．When
B．In
C．Though
D．With

单选题 The two sides did not reach an agreement __________ the end of the fifth round of the in tense negotiations.

A．still
B．from
C．when
D．until