30、Charles Babbage is generally considered______ the first computer
A．inventing B．to invent C．to have invented D．having invented
29、She will make little progress in her study ______ she has little knowledge of language.
A．unless B．although C．since D．even if
28、Not until the early years of the 19th century ______ what heat is.
A．didn’t man know B．did man know C．man did know D．man knew
27、The premier is always busy with state______.
A．matter B．things C．affairs D．business
26、In 1963 King made a speech to thousands of people, ______ immediately made him become world-famous.
A．that B．who C．which D．when
25、In 1998 Zhu Rongji was elected ______of the Chinese government.
A．a Premier B．an Premier C．the Premier D．Premier
24、Frank is the kind of person whom people like to ______.
A．Make friend with B．make friend of
C．make friend D．make friends with
23、______, we’ll go to swim.
A．Time permits B．If time permit C．Time permitting D．Time permited
22、During the break he began to sing a song and we all ______.
A．took part in B．join in C．joined D．together
21、Lei Feng ______ us a good example and we should ______ it.
A．follow; set B．gave; learn from C．sets; follow D．set; follow
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