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【单选题】回答题： Congratulations， It Will Be A Boy! Until just a few years ago， making a baby boy or a girl was pretty much a hit-or-miss affair. Not anymore. Parents who have access to the latest genetic testing...
A.
Screen a baby for sex.
B.
Predetermine a baby's sex.
C.
Insert genes.
D.
Identify genetic disorders.
【单选题】When they arrived at the railway station, they learned that the train______.
A.
was just leaving
B.
has just: left
C.
had just left
D.
just left
【简答题】财政部门销毁会计档案时，应当由上级财政部门派员参加监销。（ ）
【单选题】Until just a few years ago, making a baby boy or a baby girl was pretty much a hit-or-miss (偶然的，碰运气的) affair. Not anymore. Parents who have access to the latest genetic testing techniques can now pred...
A.
Screen a baby for sex.
B.
Remove undesirable attributes.
C.
Implant genes.
D.
Identify genetic disorder.
【简答题】财政部门销毁会计档案时，应当由上级财政部门派员参加监销。（ ）
【单选题】Only after a baby seal is pushed into the sea by its mother______to swim.
A.
how will it learn
B.
it will learn how
C.
will it learn how
D.
and it will learn how
【单选题】When was the worlds 7 billionth baby born?
A.
Just after midnoon on Saturday.
B.
Just after midnight on Saturday.
C.
Just before midnoon on Sunday.
D.
Just before midnight on Sunday.
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