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【单选题】
下列关于生殖和发育的说法 错误 的是( )A.
深圳荔枝素有夏季美食之称，我们食用的部分是由其花的子房发育而来的
B.
植物无性生殖产生的后代具有保持亲本的遗传性和繁育速度快的特点
C.
蟋蟀的发育过程经过卵、若虫、成虫三个时期，属于不完全变态发育
D.
无性生殖与有性生殖的主要区别在于是否产生有性生殖细胞并结合
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【单选题】_____ is the power of the Internet that you can get whatever you want in no time.
A.
So
B.
This
C.
That
D.
Such
【单选题】(There are) moments in life (where) you miss someone so much (that) you just (want to) pick them up from dreams and hug them for real.
A.
There are
B.
where
C.
that
D.
want to
【单选题】焊接热裂纹可分为( )三类。
A.
低塑性脆化裂纹、液化裂纹和多边化裂纹
B.
结晶裂纹、液化裂纹和多边化裂纹
C.
结晶裂纹、液化裂纹和延迟裂纹
D.
结晶裂纹、液化裂纹和淬硬脆化裂纹
【单选题】If you want ______, you should not speak so quickly.
A.
to be understood
B.
to understand it
C.
understanding
D.
to understand
【单选题】If you really want yourself to be in good health, you must always ______ so much.
A.
not... be smoking
B.
not... have smoked
C.
not... to smoke
D.
be not... smoking
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