Question

请回答下面这道SAT的题目。

2. Researchers are experimenting with various techniques for preventing the accumulation in water of high levels of nitrogen, which can kill plants and animals.
A. nitrogen, which can kill plants and animals
B. nitrogen; plants and animals can be killed
C. nitrogen, that is what can kill plants and animals
D. nitrogen, they could kill plants and animals
E. nitrogen, and they can kill plants and animals

Answer 1

选择A选项，which就近指。B前面没有联系了。C逗号和that不能连用。Drun－on。Ethey指代问题。