__________clear information concerning the nature of the problem, it w-考呗网

单选题__________clear information concerning the nature of the problem, it will be impossible for the marketing team to formulate a solution.

A．Without
B．Because of
C．Except
D．Regarding

【答案】A。解析：根据选项可知此题为选择恰当的介词的问题。

1 All workers should carry out their normal duties during the safety inspection tomor-row __________ otherwise instructed.

A．through
B．unless
C．despite
D．about

2Passengers can__________the amount of light they receive by using the black switch lo-cated on their overhead panel.

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

3 __________ fully staffed, the office will have to accommodate the workspace and equip-ment needs of over sixty workers.

A．When
B．In
C．Though
D．With