【題目】The number of children losing both parents to Aids ______ also expected to rise.

A. was B. is C. are D. were

【答案】B

【解析】

試題分析：考查時態(tài)和謂語動詞的單復(fù)數(shù)形式。該句中主語：The number of children losing both parents to Aids賓語：expected to rise.主語是一個事物——即“因艾滋失去雙親的孩子的數(shù)量。”這里的數(shù)量是看做一個整體，所以用單數(shù)的謂語動詞。根據(jù)語境來看，該句是陳述句語氣，描述客觀事實，所以用一般現(xiàn)在時。句意：因為艾滋病失去雙親的兒童數(shù)目有望上升。故選B。

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