九（上）Unit4Topic1复习课习题练
基础过关题
一.单项选择。(10分)
( )1.If you work hard , your dream will probably ______.
A.come back B.come up C.come over D.come true
( )2.Now more and more man-made satellites are ____by humans.
A.sent for B.send up C.sent up D.sent into
( )3.—What is this piece of paper made ___?
—wood
A.of B. from C.by D.in
( )4.So many unknown things_____with the help of new technology last year.
A.were discover B. Will be discovered
C. were discovered D.was discovered
