It is essential that the glass __ thicker on the outside than on the inside and that the gap between the panes of glass_

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问题 It is essential that the glass ______ thicker on the outside than on the inside and that the gap between the panes of glass______ a minimum of 7 centimeters.

选项 A、is, is
B、be, is
C、be, be
D、is, be

答案C

解析虚拟语气题。虚拟语气在主语从句中运用，从句谓语动词用“should+动词原形”，should可以省略。故C正确。

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专业英语四级

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It is essential that the glass ______ thicker on the outside than on the inside and that the gap between the panes of glass_____

专业英语四级

WriteonANSWERSHEETONEanoteofabout50--60wordsbasedonthefollowingsituationAfteryouleavehome,yourealizetha

ThepopulationofPennsylvaniaincreasedfrom50,000in1730tomorethan200,000in1763,_____tothethousandsofScotchIrish

Idon’tthinkherabilityisin______;whatIquestionisherattitude.

Formanyyoungpeople,thelate1960swasaperiodofrevoltagainstthemoralvaluesthathadbeenthestrengthandprideofth

Becauseoftheeconomiccrisis,industrialoutputintheregionremained______.（2010年考试真题）

What’sthepercentageoverseasstudentsinCityUniversity,London?

Womeninthatcountryare______therighttovote.

There’ssomethingabouttheInternetthatcanbringoutmeannessinteenagers.Thatisonefindingofastudytobereleased

Onwhataspectofweatherforecastingdoestheconversationfocus?

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It is essential that the glass __ thicker on the outside than on the inside and that the gap between the panes of glass_