【题目】Professor Hawking asks his students to read the newspaper to keep _______ of current affairs.
A. watched B. observed C. informed D. noticed
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【题目】图一表示果蝇体细胞中染色体和相关基因,图二为某家族的某种遗传病的系谱(等位基因用A和a表示)。请据图回答下列问题:
(1)图一中果蝇的性别是__________(雌、雄)性。该果蝇的中B、b和D、d两对基因的遗传遵循_________定律,其产生配子的基因型及其数量比例为____________________。
(2)图二中该遗传病的遗传方式是__________。如果3号与4号再生一个男孩,患病的概率为________。7号个体与某正常女子结婚(该女子父母正常,弟弟患该病)生正常男孩的概率是____________。
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【题目】(2016·江苏) Many young people, most __________ were well-educated, headed for remote regions to chase their dreams.
A. of which B. of them
C. of whom D. of those
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【题目】(2016·北京) I live next door to a couple ___________ children often make a lot of noise.
A. whose B. why C. where D. which
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【题目】下面图1表示人类镰刀型细胞贫血症的病因,图2是一个家族中该病的遗传系谱图(h代表致病基因,H代表正常的等位基因),请据图回答下列问题:
(1)人类镰刀型细胞贫血症产生的根本原因是发生了 。H与h基因的根本区别在于基因中 不同。
(2)图中①过程发生的时间是 ,②过程表示 。
(3)α链碱基组成为 ,β链碱基组成为 。
(4)镰刀型细胞贫血症的致病基因位于 染色体上,属于 性遗传病。
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【题目】
The Beijing Opera Taking Tiger Mountain by Strategy is still_____ in many places and it is well received.
A. directed
B. staged
C. conducted
D. set
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【题目】One of the sides of the paper should be painted yellow,and .
A. the other is white
B. another white
C. the other white
D. another is white
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【题目】 If we learn some knowledge of first aid,it can make a real ________ in time of accidents.
A.appointment B.decision C.deal D.difference
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【题目】Gun control is a subject ___________ Americans have argued for a long time.
A. of which B. with which
C. about which D. into which
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