题目内容
Anyone , once _______ positive for H7N9 flu virus , will receive medical treatment from our government.
| A．to be tested | B．being tested | C．tested | D．to test |
C
解析试题分析：句意为：一旦被检测出感染了H7N9流感病毒，任何人都要从我们的政府那里接受医学治疗。从once条件状从的角度，此题可以考虑为是在考查省略，省略的条件为非谓语动词的逻辑主话与句子的主语（everyone）一致，且有系动词be,这时可省去主语和be动词，补充完整为:Anyone, once (anyone is ) tested
Positive for H7N9 flu virus, will receive medical treatment from our government. 故答案为C。也可从非谓语动词作状语的角度考虑，anyone与test之间的关系为被动，故应排除D，A表示将来的被动，B表示正在进行的被动，均不符合题意。
考点：考查非谓语动词的用法。
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轻松课堂单元测试AB卷系列答案He got up late and hurried to his office, _____ the breakfast untouched.
| A．left | B．to leave | C．leaving | D．having left |
Entering the room, I found Mary _______ at the desk and _______ a letter.
| A．seated; wrote | B．sitting; written | C．seating; writing | D．seated; writing |
_______ that your resume works for you, I recommend writing it more like a proposal than a job description.
| A．Ensuring | B．Ensured | C．Having ensured | D．To ensure |
Either you or one of your students ________ to attend the meeting ________ tomorrow.
| A．are; to be held | B．is; being held |
| C．is; to be held | D．are; having held |
Joan stood outside a shopping mall for a long time, as if ________ somebody.
| A．to wait for | B．waiting for | C．waited for | D．having waited for |
_____of danger in the street at night, she had to go home, with a friend_____ her.
| A．Warned; accompanied | B．Warning; accompanying |
| C．Having warned; accompanied | D．Having been warned; accompanying |
in thought, he sat at the edge of the bed, with his eyes on the letter in his hand.
| A．Lost; fixing | B．Losing; fixed | C．Lost; fixed | D．Losing; fixing |
—Can you see the bridge ___over there?
— Yes. It’s scheduled to be completed next year.
| A．built | B．to be built | C．being built | D．having built |