[問題]Prep-Q11

[whoops]

Before scientists learned how to make a synthetic growth hormone, removing it painstakingly in small amounts from the pituitary glands of human cadavers.

A. scientists learned how to make a synthetic growth hormone, removing it painstakingly
B. scientists had learned about making a synthetic growth hormone, they had to remove it painstakingly
C. scientists learned how to synthesize the growth hormone, it had to be painstakingly removed
D. learning how to make a synthetic growth hormone, scientists had to remove it painstakingly
E. learning hoe to synthesize the growth hormone, it have to be painstakingly removed by scientists

答案C我選D

答案C的scientist用單數還有被動to be removed讓我作答時選不下去
答案D我覺得沒啥錯誤,learn的主詞是scientists也沒錯,看不太懂原始解釋中說的 從邏輯上來看,句意中的hormone並不是被同一群人使用,而是表述了一種事件之後,hormone就可以怎麼樣怎麼樣了

[hwatai]

我覺得第一個問題在句意上，是
make(v) a synthetic growth hormone　還是
synthesize(v) the growth hormone，如果這裡就能以動詞決勝的話最快．．．但我也無法判斷

答案C的副詞子句為科學家，主要子句為it (hormone)，即所謂A事件後，B事件即．．
答案D的副詞子句為科學家(省略)，主要子句也為科學家；(由於副詞子句省略主詞，句意上為科學家作了一件事後，科學家又作了另一件事)

但題幹的本意倒底是何，還是無法判斷，回答了半天等於沒回答，請繼續討論吧