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【单选题】
16世纪以前,影响人类生活的重大科技发明约有300多项,其中()项是中国人的发明?A.
50
B.
100
C.
175
D.
180
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反馈参考答案：
举一反三
【单选题】Arriving home on weekends, the boy told his parents all the ________ that had happened in his school. [ ]
A.
occasions
B.
incidents
C.
matters
D.
affairs
【单选题】We all think it is Mr Wang as well as his parents that _______ for his son’s bad performance at school.
A.
are to blame
B.
is to be blamed
C.
are to be blamed
D.
is to blame
【单选题】( )是体内黄素酶的辅基。
A.
黄素单核苷酸、黄素腺嘌呤二核苷酸
B.
黄素单核苷酸、焦磷酸硫胺素
C.
黄素腺嘌呤二核苷酸、焦磷酸硫胺素
D.
焦磷酸硫胺素、黄嘌呤氧化酶
【简答题】顺风旗手位是一手在()位,一手在()位。
【简答题】维生素 B 2 在体内活性形式为 __________ 和 __________ ,是黄素酶的辅基,参与氧化还原反应。
【单选题】Arriving home，the boy told his parents about all the________which occurred in his dormitory.
A.
occasions
B.
incidents
C.
matters
D.
accidents
【简答题】Arriving at home, the boy told his parents about all the ______ which occurred in his dormitory. A) occasions B) matters C) incidents D) issues
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