题目内容

From the passage we know that Symbion Inc ________.

A. has been banned by the government from producing artificial hearts
B. will review the effects of artificial hearts before designing new models
C. may continue to work on new models of reliable artificial hearts
D. can make new models of artificial hearts available on the market in 10 to 20 years

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回答第 46～47 题：
第 46 题草豆蔻的功效是（）。

A) ofB) inC) withD) over

A. of
B. in
C. with
D. over

水蛭的功效是（）。

A) aB) theC) anD) some

A. a
B. the
C. an
D. some