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【单选题】Travelling in space has been made __________ possible with the development of science and technology.
A.
that
B.
/
C.
it
D.
this
【单选题】A lot of countries have gained excellent achievements in space technology, China, _____. [ ]
A.
such as
B.
for example
C.
namely
D.
that is
【单选题】The space shuttle program entails the use of sophisticated technology.
A.
enhances
B.
develops
C.
creates
D.
involves
【单选题】A lot of countries have gained excellent achievements in space technology,China, _______. [ ]
A.
such as
B.
for example
C.
namely
D.
and so on
【单选题】If China’s space technology has achieved ____ breakthrough in this field, it really is ____ amazing wonder.
A.
the; an
B.
a; an
C.
不填; the
D.
a; 不填
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