We must ______ that the experiment is controlled as rigidly as possible.A、secure

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问题 We must ______ that the experiment is controlled as rigidly as possible.

选项 A、secure
B、ensure
C、assure
D、issue

答案 B

解析题型：词汇题。此题考查动词词义。ensure确保，如：ensure success保证成功；还可以ensure sb. against (from)danger保护某人免受危险，issue为无关干扰词，意思是“发行；分配”；secure表示“保护，确保安全”，如： secure one’s life；assure意思是“保证，担保”。

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We must ______ that the experiment is controlled as rigidly as possible.A、secure

Thescientist______mostofhisexperimentsifhehadnotrunshortofhisfund

Wemust______thattheexperimentiscontrolledasrigidlyaspossible.A、secure

Wehavenotobtainedverymuchexperimentdata______conclusionbetweenthetwo

FromtheexperimenttheEgyptiankingconcludedthat______.[br]Wecaninferf

Itisunfortunatethat,owingtolackofmoney,theseexperimentsmustnowbe__

Inthisexperiment,theywerewakenedseveraltimesduringthenight,andasked

Whenapsychologistdoesageneralexperimentaboutthehumanmind,heselectsp

Researchershavefoundexperimentalevidencethatatouchcanbeworthatho

Researchershavefoundexperimentalevidencethatatouchcanbeworthatho

Researchershavefoundexperimentalevidencethatatouchcanbeworthatho

[originaltext]Inthe1994WorldCup,amissedpenaltykickedbyRobertoBag

[originaltext]W:SothefirstlegisSydney,Australia’soldestcity?M:Oh,it

Theyoungscientistsgotthefirst-handinformationtheyneededinthescientifi

[originaltext]M:Doyouknowanyonewhohasasparebookshelf?Ijustdon’tkno

上海豫园中的冠云峰，为宋代花石纲遗物。

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