With the help of high technology, more and more new substances ______ in the past 10 years.
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A
discovered
B
have discovered
C
had been discovered
D
have been discovered
推荐题目
. In the interview, he had finally ______ several customers of the advantages of his product
#78244
A
convinced
B
reminded
C
accused
D
informed
Science and technology have in important ways __________ the improvement of agricultural production.
#72368
A
contributed to
B
resulted from
C
carried off
D
handed over
While looking for a book, I ______ this old photo taken in college.
#64813
A
came into
B
came across
C
came up
D
came out
Many memories of old times were ______ by the conversation we had during the get-together.
#68737
A
called on
B
called in
C
called up
D
called for