【单选题】【消耗次数：1】
If he was healthy, he_______do more things useful.
①
/
②
will
③
would
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相关题目
【单选题】
Wealthy ____ he was, the governor would not spend a penny on such things.
①
as
②
if
③
though
④
however
【单选题】
He said he would never be intimidated _____ what he didn’t like by big names and authorities.
①
do
②
to do
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did
④
into doing
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He moved to Ohio in 2005 where, （ ）other things, he worked as a journalist.
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awhile
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amid
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await
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among
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If he_____the storekeepers scissors,he would have forgotten to buy a pair.
①
would not see
②
had not seen
③
having not seen
④
has not seen
【单选题】
3. He had to ______ his past actions when he retired, or he would be punished.
①
consider
②
account for
③
think
④
popular
【单选题】
If he ___ tomorrow, he would find Mr. Wang in the office.
①
comes
②
will come
③
should come
④
come
【单选题】
His grandfather is very healthy. He _______drinks _______smokes.
①
both, and
②
no,but
③
either, or
④
neither, nor
【单选题】
He called the police for help, ____ that the problem was more than he could deal with.
①
to realize
②
having been realized
③
realizing
④
realized
【单选题】
He considered that the change would be ____ to his health.
①
healthy
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available
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profitable
④
beneficial
随机题目
【单选题】
正五棱锥的底面积是<img class="kfformula" src="20190809/1565328530277328.png" data-latex="26{cm}^{2}"/>，高是<img class="kfformula" src="20190809/1565328530106797.png" data-latex="6cm"/>，则其体积是（ ）。
①
<img class="kfformula" src="20190809/1565328531591499.png" data-latex="104{cm}^{3}"/>
②
<img class="kfformula" src="20190809/1565328531884474.png" data-latex="{52cm}^{3}"/>
③
<img class="kfformula" src="20190809/1565328531242148.png" data-latex="78{cm}^{3}"/>
④
<img class="kfformula" src="20190809/1565328531496628.png" data-latex="156{cm}^{3}"/>
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有100张卡片（从1号到100号），从中任取一张，取到的卡号是7的倍数的概率为（ ）
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<img class="kfformula" src="20190809/1565330760695228.png" data-latex="\frac {7} {50}" width="75" height="53"/>
②
<img class="kfformula" src="20190809/1565330760810107.png" data-latex="\frac {3} {20}" width="68" height="53"/>
③
<img class="kfformula" src="20190809/1565330760716247.png" data-latex="\frac {7} {100}" width="76" height="53"/>
④
<img class="kfformula" src="20190809/1565330760831846.png" data-latex="\frac {7} {48}" width="68" height="53"/>
【单选题】
一个班级有12个班，每个班同学以1~50排学号，为了交流学习经验，要求每班学号为14的同学留下交流，这里运用的是（ ）
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随机抽样
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系统抽样
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都不是
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数据70,71,72,73的标准差是（ ）
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<img class="kfformula" src="20190809/1565330298796439.png" data-latex="\sqrt {2}"/>
②
<img class="kfformula" src="20190809/1565330298960506.png" data-latex="\frac {\sqrt {5}} {2}" width="77" height="66"/>
③
<img class="kfformula" src="20190809/1565330298946541.png" data-latex="2"/>
④
<img class="kfformula" src="20190809/1565330298247161.png" data-latex="\frac {5} {3}" width="84" height="70"/>
【单选题】
侧棱长为10，高为6的正三棱锥的底面积是（ ）
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<img class="kfformula" src="20190809/1565327194325168.png" data-latex="60"/>
②
<img class="kfformula" src="20190809/1565327194151271.png" data-latex="48\sqrt {3}"/>
③
<img class="kfformula" src="20190809/1565327194214174.png" data-latex="24"/>
④
<img class="kfformula" src="20190809/1565327194795377.png" data-latex="30"/>
【单选题】
下列说法正确的是（ ）。
①
分别过两条相互垂直直线的平面必垂直
②
过平面的一条垂线有且只有一个平面与已知平面垂直
③
三条相交于一点的直线两两垂直，由它们确定的三个平面也两两垂直
④
过平面外一点有且只有一个平面与已知平面垂直
【单选题】
正四棱锥的侧面是正三角形，则它的高与底面边长之比为 （）
①
<img class="kfformula" src="20190809/1565327345233053.png" data-latex="2：1"/>
②
<img class="kfformula" src="20190809/1565327345365743.png" data-latex="1：2"/>
③
<img class="kfformula" src="20190809/1565327345190290.png" data-latex="1：\sqrt {2}"/>
④
<img class="kfformula" src="20190809/1565327345759526.png" data-latex="\sqrt {2}：1"/>