单项选择题

They hoped to create a computer which could ________ at 10 times the speed of computers on the market.

A．compute
B．employ
C．envy
D．comprehend

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Peony Pavilion is a love story between Du Liniang and (____) .

答案： Liu Mengmei

单项选择题

当时, 与相比较是 ( ) . A.
低阶 ; B.
高阶 ; C.
等价 ; D.
同价无穷小，但非等价 .