OG & LZM 4道语法题请教

1.OG160

While some propose to combat widespread illegal copying of computer programs by attempting to change people’s attitudes toward pirating, others by suggesting reducing software prices to decrease the incentive for pirating, and still others by calling for the prosecution of those who copy software illegally.

(C) suggest the reduction of software prices for decreasing the incentive for pirating, and still others call

(E) suggest reducing software prices to decrease the incentive for pirating, and still others are calling

答案是E，我选的是C，虽然我也觉得reduction of sth 不如reducing sth好，而且应该用to do的句型表目的，可是E的句式结构不就成了some do, others do, and still others are doing了吗？不对称啊？相比较而言，还是C这种some do , others do, and still others do比较对称啊。

2.OG LZM

P28. E2-14    As a result of the ground-breaking work of Barbara McClintock, many scientists now believe that all of the information encoded in 50,000 to 100,000 of the different genes found in a human cell are contained in merely three percent of the cell’s DNA.

(A)    50,000 to 100,000 of the different genes found in a human cell are contained in merely

(B)    50,000 to 100,000 of the human cell’s different genes are contained in a mere

(C)    the 50,000 to 100,000 different genes found in human cells are contained in merely

(D)   50,000 to 100,000 of human cells” different genes is contained in merely

(E)    the 50,000 to 100,000 different genes found in a human cell is contained in a mere

答案是E，没有问题，我的问题是in a mere 这种用法有吗？一般不都是merely吗？究竟in a mere和in merely有啥区别啊？

3. LZM

P217.    11-45    Originally published in 1950, Some Tame Gazelle was Barbara Pym’s first novel, but it does not read like an apprentice work..

(A)        does not read like an apprentice work

(B)        seems not to read as an apprentice work

(C)        does not seem to read as an apprentice work would

(D)       does not read like an apprentice work does

(E)        reads unlike an apprentice work

答案是A，我第一次做的时候选E，第二次做选A，感觉确实A更好些。但是doesn’t like 和 unlike究竟有什么区别呢？

4.LZM

P227.    E11-30   Unlike other arachnids, which have their nerve cells evenly distributed along their bodies, the scorpion’s nerve cells are clustered in its head, like a mammal’s.

(A)        bodies, the scorpion’s nerve cells are clustered in its head, like a mammal’s

(B)        bodies, the scorpion’s  head has a cluster of nerve cells, as a mammal does

(C)        body, the scorpion has a cluster of nerve cells in its head, as a mammal does

(D)       body, nerve cells are clustered in the scorpion’s head, like a mammal’s

(E)        body, a cluster of nerve cells is in the scorpion’s head, like a mammal’s

答案是C，我选的也是C，可是为什么会出现their body这种单复数不统一的情况呢？

好复杂~~看晕了~~其实我问的都不是题目本身，只是联想到了几个语法点，哪位大侠能帮我解答一下啊？