【简答题】Suppose you are the secretary of the manager of a company. You attended the negotiation between your company and a foreign company. Write a memo of the negotiation. The memo should include: 1) time an...
【简答题】人类皮肤正常是由显性基因(A)控制,白化病是由隐性基因(a)控制,根据下图遗传图解分析回答下列问题:(9分) ① ② ③ ④ (1)人类肤色的正常和白化在遗传学上称为 ,后代子女中②表现出来的性状是 。 (2)父亲的基因组成是 ,母亲的基因组成是 。 (3)母亲能产生 种卵细胞,其基因是 。 (4)如果母亲体细胞中染色体数目是46条,那么,她为后代子女提供了 条染色体,...
【简答题】人类白化病是由a基因控制的隐性遗传病.如图为某家族的白化病遗传情况,请分析回答: (1)正常肤色和皮肤白化现象在遗传学上称为______. (2)上图中⑤号为女性白化病患者,可推知②号个体的基因组成为______. (3)经基因检测发现⑥号个体不携带致病基因a,则其与⑤婚配后的子代⑦患白化病的概率是______. (4)1号个体是正常男性,他产生的生殖细胞的染色体组成为______.
【单选题】The ditry tricks played upon the Secretary of the State are ______ by the high ranking officials behind the scenes.
【简答题】A.The doctor. B.The boss. C.The teacher. D.The secretary.
【单选题】When the woman told Smith that the gray-haired man at the end of the table was the Secretary of the International Department, Smith _________.
A.
said something against the Secretary
B.
said something nice about the Secretary
C.
was very pleased to hear that
D.
wanted to make friends with the Secretary