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【判断题】
如果一条直线和平面内的无数条直线垂直,那么它和这个平面垂直A.
正确
B.
错误
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【简答题】2009年青年歌手大奖赛中，10位评委给一位歌手的打分如下：9.6、9.8、9.4、9.7、9.1、9.7、9.6、9.5、9.6、9.4，这组数据的平均数是______，中位数是______，众数是______．
【简答题】某研究性学习活动小组，从下列装置中选用部分装置组装后在实验室里制取氧气，并通过排水量来测定所收集到氧气的体积． A B C D E F 1）写出图中有标号的仪器的名称：①_________；②_________;③___________ 。 2）甲同学用一定质量的高锰酸钾制取氧气，反应的化学方程式为______________，...
【单选题】He has never visited the town______he was born.
A.
where
B.
which
C.
on which
D.
that
【单选题】This is the first time that he your hometown.
A.
visited
B.
visits
C.
had visited
D.
has visited
【单选题】This is the second time that he ____________ China.
A.
will visit
B.
visits
C.
is to visit
D.
has visited
【单选题】The villagers in the mountain have a firm ________ that they will have a good harvest next year. [ ]
A.
opinion
B.
theory
C.
belief
D.
order
【单选题】The villagers in the mountain have a firm ______ that they will have a good harvest next year.
A.
opinion
B.
theory
C.
idea
D.
belief
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