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没有硬性要求，这里第二个that是和前面的that形成并列
有这个规则。。。前几天看题时有人这么评论了
第一句:unless=if not-------原命题：除非停止杀虎，否则虎就会灭绝 = 如果不停止杀虎，虎会灭绝
否命题：如果停止杀虎，虎不会灭绝（虎会生存）----原命题真，否命题不一定真
即 停止杀虎 无法推出--> 虎会生存；停止杀虎 不是 虎会生存的充分条件
逆否命题：虎不会灭绝（虎会生存），必须停止杀虎----原命题真，逆否一定真
虎会生存 可以推出--> 停止杀虎；停止杀虎 只是 虎会生存的必要条件----说明还有他因存在，会影响虎的生存与否，即E说的意思
就像是 如果妳考到90分》就有獎金 但是沒有考90分不一定沒有獎金（有可能考100） 而沒有獎金》一定是沒有考到90分
哈哈哈这是ron的原话吧！
Exactly!
gmat搁这儿脑筋急转弯似的
The shang 不只可以理解为商朝，还可以理解为商朝人，第一句里说了administrators，说明主语是一些人（并且是复数），所以后面的the shang只能理解为商朝人
In English, collective nouns for ethnic groups / families/dynasties / proper names for sports teams, etc, will be plural (unlike other collective nouns):
The Welsh have delightful accents.
The Medici were avid art collectors.
The Heat (basketball team) play in Miami.
So in this sentence, "the Shang" must be plural. Eliminate C.
In E, "and" should connect two verbs. However, "and well known" is a participial modifier. This isn't parallel.
The correct answer is D.
In English, collective nouns for ethnic groups / families/dynasties / proper names for sports teams, etc, will be plural (unlike other collective nouns):
The Welsh have delightful accents.
The Medici were avid art collectors.
The Heat (basketball team) play in Miami.
So in this sentence, "the Shang" must be plural. Eliminate C.
In E, "and" should connect two verbs. However, "and well known" is a participial modifier. This isn't parallel.
The correct answer is D.
又读了几遍，服了；原来what是主语
E having been injured three times and discharged 不能做join的伴随状语
正确：I have breakfest,having read the newspaper.在吃早饭前看完报纸
伴随状语只能和主语同时发生或者发生在主语的时间前