几道Prep题,confused

 The yeild per acre of coffee berries varies enormously in that a single tree,depending on both its size and on climate and altitude, could produce enough berries to make between one and twelve pounds of dried beans a year.

B.enormously in that a single tree,dependent on its size and also on climate and altitude, is able to produce

C.enormously,because a single tree,depending on its size and on climate and altitude, is able to produce.

Key is C

我一直不大明白""becasue & in that"的区别,有谁能告诉我吗?

还有这里的dependent和depending,到底哪个更好呢?

另外一道

before scientist learned how to make a synthetic growth hormone, removing it painstakingly in small amounts from the pitutary glands of human cadavers.

C:scientist learned how to sythesize the growth hormone,it had to be painstakingly removed

D:learning how to make a synthetic growth hormone,scientists had to remove it painstakingly

Key is C. I doubt the use of "it" in C and my choice is D.

Who can help me~~

顶一下

没人吗..**寂寞

在OG11中有讲到in that与because的区别，in that has largely gone out of use, it is considered stilted and overly formal.当它与because比时，it also uses two words when one would do.

所以because优于in that。 但并不绝对，不能一见in that就把它当错误项排除喔！！

二者是相对的错误！