You cannot tell________looking at someone whether or not he has HIV.A.without B.

You cannot tell________looking at someone whether or not he has HIV.A.without B.

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You cannot tell________looking at someone whether or not he has HIV.
A.without B.by
C.for D.with

答案
B
解析
考查介词辨析。句意:你不可能凭外表来判断一个人是否携带HIV病毒。by意为“通过,用……,靠……”,符合句意。
举一反三
“Russia wants to maintain its established diplomatic relations with Libya  and  never  interrupt  them________which government was in power in Libya,” the leader said.
A.because ofB.regardless of
C.in need of  D.in terms of

题型:不详难度:| 查看答案
The country has been ______ war with its neighbor for almost ten years.
A.inB.onC.atD.during

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---Is there anything you’d like for dinner?
---No, nothing ____.
A.in placeB.in returnC.in particularD.in turn

题型:不详难度:| 查看答案
—Have you ever seen two leaves that are exactly the same?
—Never. Leaves differ ____ each other ____ size and shape.
A.from; inB.in; inC.in; fromD.from; from

题型:不详难度:| 查看答案
______ the assignment said above, you have to write a 200-word composition on environment pollution. 
A.In additionB.Apart fromC.ExceptD.Other than

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