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【单选题】
关于排卵期，下述哪项描述是正确的：()A.
宫颈粘液受雌激素影响变得稀薄，易于精子穿透，进入宫腔
B.
宫颈粘液受雌激素影响变得粘稠，易于精子穿透，进入宫腔
C.
宫颈粘液受雌激素影响变得稀薄，精子难穿透，进入宫腔
D.
宫颈粘液受雌激素影响变得粘稠，精子难穿透，进入宫腔
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【简答题】压力容器标有“II M S”表示什么意思?
【单选题】With his lips still _______ ，he couldn’t say a word．
A.
trembling
B.
tremble
C.
to tremble
D.
to be trembling
【简答题】The dying man moved his lips as if ______ something, but it was too late for him to let out a sin16．The dying man moved his lips as if ______ something, but it was too late for him to let out a single...
【多选题】学生日常行为规范中，自尊自爱、仪表端庒要做到：
A.
坐、立、行走、读书、写字姿势端正。
B.
穿着整洁，朴素大方。
C.
举止文明、礼貌，态度和蔼，谈吐文雅。
D.
不吸烟。不酗酒、不早恋。
E.
不赌博，不打架斗殴，不参加封建迷信举动，不传看黄色书刊、录像，不进网吧。维护国家尊严和利益，不做有损国格、人格的事
【单选题】A diesel engine should not be operated at low loads for long periods of time because_____
A.
heavy carbon deposits will buildup on the valves and in the exhaust
B.
fuel dilution is increased at low load
C.
exhaust valves may be damaged
D.
all of the above
【单选题】He has a______ habit of biling his lips when he is puzzled.
A.
particular
B.
specific
C.
peculiar
D.
general
【简答题】In a time of low academic (学术的) achievement by children in the United States, many Americans are turning to Japan, a country of high academic achievement and economic success, for possible answers. Ho...
【单选题】I seemed to be pretty good___ reading his lips after a while, even better than the nurses that were caring ___ him.
A.
at; for
B.
for; for
C.
at; about
D.
for; about
【单选题】In a time of low academic achievement by children in the United States, many Americans are turning to Japan, a country of high academic achievement and economic success, for possible answers. However,...
A.
Japanese parents are more involved in preschool education than American parents
B.
Japan's economic success is a result of its scientific achievements
C.
Japanese preschool education emphasizes academic instruction
D.
Japan's higher education is superior to theirs.
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