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【单选题】
What are the major decisions about?
A.
Talking over paying off deficit.
B.
Increasing the number of middle class.
C.
Controlling the impact on education.
D.
Planning to reduce energy consumption.
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【单选题】—Robert is indeed a wise man. —Oh, yes. How often I have regretted his advice! [     ]
A.
to take
B.
taking
C.
not to take
D.
not taking
【单选题】— Tom is indeed a wise man. — Oh ,yes. How often I have regretted his advice! [      ]
A.
to take
B.
taking
C.
not to take
D.
not taking
【单选题】I have always regretted not to have studied harder at school .
A.
always
B.
not to have
C.
harder
D.
at school
【单选题】I have regretted not ____________ harder at school.
A.
having studied
B.
studied
C.
have studied
D.
to study
【判断题】明朝大学士可以向皇帝呈上秘密的揭帖。
A.
正确
B.
错误
【单选题】I always regretted not_________ harder when I was young.
A.
study in
B.
having studied
C.
to study
D.
to have studied
【简答题】运用化学反应原理研究氮、氧等单质及其化合物的反应有重要意义. (1)合成氨反应N 2 (g)+3H 2 (g)?2NH 3 (g),若在恒温、恒压条件下向平衡体系中通入氩气,则平衡______移动(填“向左”“向右”或“不”);使用催化剂,上述反应的△H______(填“增大”“减小”或“不改变”). (2)甲烷在高温下与水蒸气反应的方程式为:CH 4 +H 2 O=CO+3H 2 .已知部分物质...
【简答题】幼儿黑矇性是一种AR遗传病,现有一对表兄妹,表型正常,准备结婚,虽然双方父母都正常,但双方的同胞中均有人死于此病,所以前来咨询: (1)双方都是携带者的可能性有多大? (2)基于上述答案,他们婚后生出此病患儿的概率是多大? (3)如果表兄与该基因正常的女子结婚,生出此病患儿的概率是多大? (4)如果他们已生育了一个该病患儿,则生出表型正常孩子的可能性有多大?
【单选题】合成氨所需的氢气可用煤和水作原料经多步反应制得,其中的一步反应为: CO(g)+H 2 O(g) CO 2 (g)+H 2 (g) ΔH<0 反应达到平衡后,为提高CO的转化率,下列措施中正确的是(  )
A.
增加压强
B.
降低温度
C.
增大CO的浓度
D.
更换催化剂
【简答题】幼儿黑矇性是一种AR遗传病,现有一对表兄妹,表型正常,准备结婚,虽然双方父母都正常,但双方的同胞中均有人死于此病,所以前来咨询: (1)双方同时都是携带者的可能性有多大? (2)基于上述答案,他们婚后生出此病患儿的概率是多大? (3)如果表兄与该基因正常的女子结婚,生出此病患儿的概率是多大? (4)如果他们已生育了一个该病患儿,则生出表型正常孩子的可能性有多大?
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