Teratomas are unusual forms of cancer (because they are composed of tissues such as tooth and bone) not normally found in the organ in which the tumor appears.
1. 2. because they are composed of tissues like tooth and bone that are 3. because they are composed of tissues, like tooth and bone, tissues 4. in that their composition, tissues such as tooth and bones, is 5. in that they are composed of tissues such as tooth and bone, tissues
刘振民书中这样解释，根据公理举例用such as，而不用like；表某物区别于其他物体或具有独特性时，一般用is that，而不用because。而在OG中则强调了suchas和like 的区别，一针见血，因为such as 表示两样东西是同一类，而like则含有两者不属同类的意思。
更可气的是刘书中还有错误的答案，第十八页E1-13题：
Archaeologists in Ireland believe that a recently discovered chalice, which dates from the eighth century, was probably buried (to keep from) being stolen by invades.
1. 2. to keep it from 3. to avoid 4. in order that it would avoid 5. in order to keep from
you post helped me a lot, hehe!作者: susannaliu 时间: 2003-3-31 20:28
thank you for your explanation. any suggestion about critical reasoning would be greatly apprecited作者: chipmunk 时间: 2003-4-1 03:27
It's somewhere downstairs. But, I didn't spend much time on CR, so only little to tell.作者: knight9514 时间: 2003-4-24 07:43
no wonder I can't understand that CR's answer. Thx a lot!作者: anchoret 时间: 2003-4-24 12:46
Good job!
作者: 出发去月球 时间: 2017-8-21 17:06
对于这一题我也不太明白
Archaeologists in Ireland believe that a recently discovered chalice, which dates from the eighth century, was probably buried (to keep from) being stolen by invades.
1.to keep from
2. to keep it from
3. to avoid
4. in order that it would avoid
5. in order to keep from
我主要是在2 和 3里面纠结，OG上面说3不合适是因为the chalice acts to prevent its own theft 。
但是keep不是同样的道理吗？
chalice也无法自己keep it from啊。
就这个地方理解不了，avoid 和keep it from有什么区别
