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【判断题】
鉴定SO 4 2- 时,加入BaCl 2 溶液后,产生白色沉淀,沉淀加入HCl不溶,才能最后确定试液含SO 4 2- ( )A.
正确
B.
错误
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【单选题】The search for eternal youth is no less fervent now than it was 2,000 years ago. People are trying practically anything.
A.
prolonged
B.
external
C.
protracted
D.
excessive
【单选题】Walking in the street, ______ .
A.
a bike had knocked him down
B.
he was knocked down by a bike
C.
a bike knocked him down
D.
he knocked down a bike
【单选题】Why was the man late for the opera?
A.
Because he was knocked down by the car and was seriously injured.
B.
Because he was too busy to remember the exact time of the opera.
C.
Because he had to comfort his sister whose boyfriend was badly injured.
D.
Because he was struck in the traffic jam and could hardly move forward.
【单选题】After he was knocked down by a bike, he was badly hurt and had to ______ to his feet.
A.
stand
B.
struggle
C.
run
D.
sit
【单选题】What happened to the man?
A.
He was knocked down by a bicycle.
B.
He was followed by a woman.
C.
His money was stolen.
D.
He was robbed of his left shoe.
【简答题】阅读下面的材料,然后根据材料内容回答所提问题。 Liu Wei is very famous in China because he can play the piano with his toes( 脚趾 ). One day when Liu Wei was only 10 years old, he played a with some friends. He lost both ...
【简答题】第二节：阅读下面材料，并从所给的四个选项Ａ、B、C、D中选出符合各小题要求的最佳选项。 The following people are all choosing a car. After the description of these people , there is information about four kinds of cars A—D. Decide which car wo...
【单选题】When his brother was to cross the street, he was knocked down by a truck and badly ____.
A.
injured
B.
damaged
C.
harmed
D.
destroyed
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