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【單選題】
鉆頭(即麻花鉆)是機(jī)械行業(yè)中用途最廣泛和最常用的消耗性工具。小張?jiān)诠S修磨鉆頭的實(shí)踐中發(fā)現(xiàn)手工修磨鉆頭無依靠及參照物，影響到工作的精度和質(zhì)量，于是開發(fā)研制了 “鉆頭刃磨器”。成功地解決了磨鉆頭困難的問題?！般@頭刃磨器”課題的發(fā)現(xiàn)來源于( )
A.
觀察日常生活
B.
技術(shù)試驗(yàn)和技術(shù)研究
C.
收集信息和分析信息
D.
專家的指點(diǎn)
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舉報(bào)參考答案：
舉一反三
【單選題】From the second paragraph, we can see that in the early years, ______.
A.
those colleges and universities were the same
B.
people,young or old might study in the colleges
C.
students studied only some languages and science
D.
when the students finished their school, they became lawyers or teachers
【單選題】What does the girl often do after supper?
A.
She often baths the dog
B.
She often talks to the dog
C.
She often walks the dog
【單選題】Which of the following are NOT the characteristics of British humor?
A.
dry and satirical
B.
negative and mocking
C.
encouraging and gentle
D.
clever and witty
【單選題】Why do most visitors, who once visited Britain, think that the British are unfriendly?
A.
Because the British always take things seriously.
B.
Because the British have no sense of humor.
C.
Because the British are cold and difficult to get along with.
D.
Because the British have a different sense of humor.
【單選題】The oldest university in the US is ______.
A.
Yale
B.
Harvard
C.
Princeton
D.
Columbia
相關(guān)題目：
【單選題】From the second paragraph, we can see that in the early years, ______.
A.
those colleges and universities were the same
B.
people,young or old might study in the colleges
C.
students studied only some languages and science
D.
when the students finished their school, they became lawyers or teachers
【單選題】What does the girl often do after supper?
A.
She often baths the dog
B.
She often talks to the dog
C.
She often walks the dog
【單選題】Which of the following are NOT the characteristics of British humor?
A.
dry and satirical
B.
negative and mocking
C.
encouraging and gentle
D.
clever and witty
【單選題】Why do most visitors, who once visited Britain, think that the British are unfriendly?
A.
Because the British always take things seriously.
B.
Because the British have no sense of humor.
C.
Because the British are cold and difficult to get along with.
D.
Because the British have a different sense of humor.
【單選題】The oldest university in the US is ______.
A.
Yale
B.
Harvard
C.
Princeton
D.
Columbia
參考解析：
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