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【题目】(2015·天津) Tom had to the invitation to the party last weekend because he was too busy.
A. turn in B. turn down
C. turn over D. turn to
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【题目】 (2017·江苏完形改编) This , of course, that he arrived at school early in the morning, dragging his heavy instrument case across the campus to the pitying looks of the non-musicians he had left behind.
A. proved B. showed C. stressed D. meant
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【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】No matter how frequently on stage, the tickets of the drama are still so hot that you have to book one two or three months in advance.
A. performed
B. performing
C. to be performed
D. being performed
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【题目】某生物学习小组对当地人类的遗传病进行调查,调查结果如下表。请根据表中资料分析回答下列问题:
有甲病,无乙病 | 无甲病,有乙病 | 有甲病、有乙病病病 | 无甲病、无乙病 | |
男(人数) | 279 | 250 | 6 | 4465 |
女(人数) | 281 | 16 | 2 | 4701 |
(1)控制甲病的基因最可能位于___________染色体上,控制乙病的基因最可能位于_______染色体上,简要说明理由________________。
(2)如果要进一步判断甲病和乙病的遗传方式还要采取的措施是:对患者的家系进行调查,并绘制_____________________。
(3)该小组经调查后绘图如下,且得知Ⅱ-4婚前曾做过基因检测确认无甲、乙两病的致病基因。
据此进一步判断:甲病的遗传方式为_______________,乙病的遗传方式为________________。Ⅲ-1的基因型为(甲病基因用A、a表示,乙病基因用B、b表示)_____________________。如果Ⅲ-2与Ⅲ-3婚配,生出正常孩子的概率为_____________________。
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【题目】—The weather turns out to be fine.
— We can depend on _________ that the goods will be shipped to the flooded area on time.
A.it B./ C. this D. which
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【题目】She is just shy and doesn’t like to talk, so it is rather unfair to her .
A. accuse; with coldness B. charge; with cold
C. charge; of being cold D. accuse; of coldness
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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】Along with the letter was his promise he would visit me this coming Christmas.
A. which
B. what
C. that
D. whether
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