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【多选题】
煤矿井下发生火灾,在抢救人员和灭火过程中,必须指定专人检查()、其他气体和风向、风量的变化,还必须采取防止瓦斯、煤尘爆炸和人员中毒的安全措施。A.
瓦斯
B.
一氧化碳
C.
空气温度
D.
煤尘
E.
以上全不是
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举一反三
【简答题】群,组,束,串,n.
【简答题】n.群;组;
【单选题】What does the example of Czech speakers show?
A.
It's natural for language learners to make errors.
B.
Differences between languages cause difficulty.
C.
Difficulty stems from either difference or similarity.
D.
There exist differences between English and Czech.
【简答题】n.群;组;束;串;簇
【简答题】根的初生木质部和初生韧皮部 排列,而茎的为 排列。
【简答题】b___ n. 束,球,串 ; 一群
【单选题】The Bronze Age Greeks, or Mycenaeans, such lists show, had created the first highly centralized civilization in Europe - a precursor to city-states, empires and nations from Athens to the Soviet Union...
A.
ancestor
B.
forerunner
C.
foundation
D.
similarity
【单选题】What is the use of the word “while” in sentence 3 in paragraph 7 ?
A.
to show a contrast between the two situations
B.
to show a similarity between the two situations
【简答题】Directions: In this part, you will read a passage about the similarity and differences between the twin brothers George and Paul. Fill in the blanks with the correct joining words that show comparison...
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