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【单选题】
在一密闭容器内有M、N、X、Y四种物质，在一定条件下反应一段时间后，测得反应前后各物质质量如下： 物质 M N X Y 反应前质量/g 8 11 18 10 反应后质量/g 8 a 4 2 下列判断正确的是（ ）A.
该反应为分解反应
B.
X和M是反应物
C.
X和Y是生成物
D.
a=33
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【简答题】软件操作:1层补充砌体加筋。 填空:1层砌体加筋的钢筋总量为( )t(保留3位小数)。
【简答题】成角透视: 。 这种透视的特点 。
【多选题】Lots of complex sentence structures can be translated by using_______.
A.
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B.
Non-Subject Sentence
C.
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D.
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【单选题】______is using a sentence to perform. a function.
A.
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Speech act
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A.
using fractions in scientific fields
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forming a number by the digits
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properly
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slightly
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less
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a little
【简答题】软件操作:1层补充砌体加筋。 填空:1层砌体加筋的钢筋总量为( )。
【单选题】In the sentence 'Using a moderately powerful desktop computer running a music composition program and a '500 synthesizer' (paragraph 2) , the word 'moderately' has the meaning of ______.
A.
properly
B.
slightly
C.
less
D.
a little
【单选题】By using the sentence 'that is final', the author ______.
A.
shows his firm standpoint on these matters
B.
implies that there was to be a sports meet
C.
shows that it is the last time for them to discuss this matter
D.
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