_____entering the classroom, remember to take your seat and turn off your cell p
题型：不详难度：来源：
| _____entering the classroom, remember to take your seat and turn off your cell phone. |
答案
| C |
解析
试题分析：句意：一进入教室，记得坐下关掉手机。Upon+名词或动名词，表示“一…”，at“在…地方，听见…”，from“来自”，As“做为”，所以选C。 |
举一反三
| The ship will go faster if we sail _________ the wind. |
| With a school built in the village, the children needn"t climb the mountain for study. |
They are similar＿＿＿appearance, but differ＿character| A．to; from | B．in; from | C．to; in | D．in; in |
|
During the examination we are required to stay in our seats, keep our eyes on our work, to anyone.| A．instead of speaking | B．rather than speak | | C．and not to speak | D．but would not speak |
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The chickens will provide us _______ feathers, ______ we can make use for cleaning the table and benches.| A．with; with | | B．with; of which | | C．of; which | | D．of; from which |
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