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【单选题】
光化学烟雾是由下列哪些环境污染物在强烈的太阳紫外线作用下，发生光化学反应而形成的一种浅蓝色烟雾A.
H2S、CO
B.
CO2、Nox
C.
NOx、烃类
D.
烃类、醛类
E.
醛类、酮类
拍照语音搜题，微信中搜索"皮皮学"使用
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】__________ that her son had broke his leg, she hurried back home.
A.
Having been told
B.
Telling
C.
Having told
D.
To be told
【单选题】She hurried back to her house, only ________ a lot of her jewels ________. [ ]
A.
finding; robbed
B.
finding; stolen
C.
to find; robbed
D.
to find; stolen
【简答题】She hurried back to school 怕缺课太多.
【单选题】- Mother hasn’t come back yet. - Well, she ought ____. [ ]
A.
to
B.
to be
C.
to do
D.
to have
【单选题】She hurried back because she did not know that the meeting has been put off.
A.
Simple Sentence
B.
Compound Sentence
C.
Complex Sentence
【简答题】He hurried to write back to her, lest she (blame)______him.
【单选题】____that her mother was seriously ill she, hurried back her hometown .
A.
On informing
B.
On being informed
C.
To inform
D.
To be informed
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