B. 根据逻辑应该是try to recover而不是try和recover两个并列。
C. Trying to recover uranium out of seawater主语过长，应该用形式主语it代替更好，而且recover A from B 为固定搭配。
D. To try for错误，其他错误同B。
E. 不是Recovering uranium from seawater 是值得试图去做的，而是 Trying to recover uranium out of seawater是值得做的
其实我觉得这道题不是细节题，是逻辑推理题，early chartered trading companies未从可知究竟是19世纪还是16，17世纪（第一道题的答案就有early chartered trading companies，但很明显不是16，17世纪），而题目问的是are usually described as，而最后一句话有说early trading companies organized effectively in remarkably modern ways and merit further study as analogues of more modern structures.就说明以前在讨论modern cooperation 时没有考虑early trading companies 也就是early chartered trading companies
seem, appear, look是表象系动词，可以直接作be动词使用，表示是，如：
She didn't appear surprised at the news at all.
此外还有固定搭配：appear to be/to have been，it appears that，如：
She appeared to be in her late thirties. 看样子她快四十岁了。
It appears that there has been a mistake. 看来有一个差错。
what是个名词，可以替换成the thing，what appears to be ……，看上去是……的东西
whether：
whether/whether or not/whether…or not都表示是否
E.G：
Whether or not this idea can be put into practice is still not sure.
I asked him whether he had done it all himself or whether someone had helped him.
I want to know whether it’s good news or not.
Whether/or表示是A还是B，没有否的意思。Whether，or二者都是连词，可以省略不需要严格对称，只要or连接的内容可以与前面的某部分内容平行就行，如：
E.g：He asked me whether I wanted to go there by train or by bus.
A. which引导的定语从句修饰其前面的toys，但逻辑上是Television programs developed in conjunction with the marketing of toys这个事件prohibited by federal regulations，A错误。
B. Television programs developed in conjunction with the marketing of toys是一个完整的句子，a practice that federal regulations once prohibited, is thriving in the free market conditions permitted by the current Federal Communications Commission是另外几个句子，两个句子之间缺少连词，B错误。
C. as 引导的状语从句缺少主语，C错误。
D. they指代不明，regulations or programs? D错误。
but可以做副词，表示仅仅，只有，如：
we can but try.我们可以小试一下。
There were a lot of famous people there: Tom Hanks and Julia Roberts, to name but two.只提其中两个人吧。
Trenton, New Jersey, is but one of a large number of communities. T只是很多个社区中的一个。
A. A and B attest 对
B. A and the painting of B attests 错
C. A and B attests 错
D. The finding of A and the painting of B attests 错
E. The finding of A and B attest 错
D. Correct. This choice does not weaken the argument. The higher likelihood that one is involved in an automobile accident in the U.S. actually has no bearing on the higher rate of severe injury among passengers who are involved in automobile accidents. That is, the rate itself is a proportion of the total number of passengers involved in accidents rather than the number itself. This rate would remain the same whether 10 accidents or 10 million accidents occurred.
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B. 根据逻辑应该是try to recover而不是try和recover两个并列。
C. Trying to recover uranium out of seawater主语过长，应该用形式主语it代替更好，而且recover A from B 为固定搭配。
D. To try for错误，其他错误同B。
E. 不是Recovering uranium from seawater 是值得试图去做的，而是 Trying to recover uranium out of seawater是值得做的