只读光盘的英文缩写是( )。
A．WORMB．MOC．W0D．CD-ROM
参考答案：D
解析：只读光盘的英文缩写是CD—ROM。故选D。
Though he failed many times in election, he never lost______ heart and at last he was elected_______ President of the USA.
A. the ; a B. a ; the C. his; the D. / ; /
下列蠕虫中不属于线虫的是（）
A.trichinell spirlis
B.Trichuris trichiura
C.Enterobius vermicularis
D.Ascaris lumbricoides
E.Pagumogonimus skrjabini
