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【判断题】
Panic-mode error recovery is a simple technique that just bails out of the current construct, looking for a safe symbol at which to restart parsing. The parser just discards input tokens until it finds what is called a synchronizing token. The set of synchronizing tokens are those that we believe confirm the end of the invalid statement and allow us to pick up at the next piece of codeA.
正确
B.
错误
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举一反三
【判断题】( ) 8. People use special drilling machines in order to protect the wildlife
A.
正确
B.
错误
【简答题】People wear it to protect their feet.
【简答题】Something protect people from rain.
【单选题】Do you know insurance(保险)? Buying insurance is a【C1】______by which people can protect themselves【C2】______large losses. Protection against fire is one kind of insurance. Large numbers of people pay【C3...
A.
idea
B.
sole
C.
thought
D.
means
【单选题】People protect their environment by_______.
A.
cutting down unhealthy trees
B.
making changes around the trees
C.
cooling and cleaning the air around the trees
D.
protecting the environment for trees growth
【简答题】一切矿藏、水流、森林、山岭、草原、荒地和滩涂都属国家所有。判断对错
【单选题】下列离子方程式中，属于水解反应的是
A.
HCO 3 － +H 2 O H 3 O + +CO 3 2 －
B.
HCO 3 － +H 2 O H 2 CO 3 +OH －
C.
CO 2 +H 2 O HCO 3 － +H +
D.
CH 3 COOH CH 3 COO － +H +
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