gwd 3- 10（狂搜未果，无奈发贴）

Antarctica receives more solar radiation than does any other place on Earth, yet the temperatures are so cold and the ice cap is reflective, so that little polar ice melts during the summer; otherwise, the water levels of the oceans would rise 250 feet and engulf most of the world’s great cities.

1. is reflective, so that little polar ice melts during the summer; otherwise,
2. is so reflective that little of the polar ice melts during the summer; were it to do so,
3. so reflective that little polar ice melts during the summer, or else
4. reflective, so that little of the polar ice melts during the summer, or
5. reflects so that little of the polar ice melts during the summer; if it did

我认为不考虑后面的连词， b 和c 都不错，还比较喜欢c ；

问题是后面的or else为什么要被排除呢？

发错地方了。。 看到的话删了吧

B 绝对是正确的 。

were it to do so, 是正确语序

而且 在sc中 很多时候有分句的选项都是正确的选项

is和are的区别，独到见解！

不过你确定没有反例么？以前我也没有注意过

那么 or else 有什么错误呢？ 以前从来没有看到过这个东东

有人能帮我查一下longman么？ ^_^

or else 可能也是一个问题，和and also 一样，

虽然连词+副词是可以的，但是有语意重复之嫌

The irradiation of food kills bacteria and thus retards spoilage.  However, it also lowers the nutritional value of many foods.  For example, irradiation destroys a significant percentage of whatever vitamin B1 a food may contain.  Proponents of irradiation point out that irradiation is no worse in this respect than cooking.  However, this fact is either beside the point, since much irradiated food is eaten raw, or else misleading, since _______.

一道逻辑，可以看到最后以行的or else 这么说来应该就是前面的is 和 are的问题了

一道逻辑，可以看到最后以行的or else 这么说来应该就是前面的is 和 are的问题了