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题库 / OG Diagnostic Test-SC-95
Like embryonic germ cells, which are cells that develop early in the formation of the fetus and that later generate eggs or sperm, embryonic stem cells have the ability of developing themselves into different kinds of body tissue.
embryonic stem cells have the ability of developing themselves into different kinds of body tissue
embryonic stem cells have the ability to develop into different kinds of body tissue
in embryonic stem cells there is the ability to develop into different kinds of body tissue
the ability to develop themselves into different kinds of body tissue characterizes embryonic stem cells
the ability of developing into different kinds of body tissue characterizes embryonic stem cells
题目分析：
本题具有比较词like，很容易排除一些选项。
选项分析：
A选项：动词develop身后多出一个宾语themselves，应该删掉。这是因为，干细胞肯定是有能力把“自己”变成身体的不同组织，不会让别的东西变成身体组织。
另外，the ability身后只能加不定式to do而不能加介词短语of doing。这点考查了“动名词和不定式的区别”。用之于本题，例如我们说：
James have the ability to finish GMAT.
在例句开始的时候，显然詹姆斯还没有完成GMAT呢，否则我们就说的是一句废话，因为人家都已经完成了，当然是有能力了。由此可知，ability的定语只能用不定式而不能用介词短语。
B选项：Correct.在语法和逻辑上均是正确的。
C选项：比较对象在语法上不对等。本选项比较的是embryonic germ cells和in embryonic stem cells。
D选项：比较对象不对等。本选项比较的是embryonic germ cells和ability。
E选项：比较对象错误同(D)；ability of doing错误同(A)。