私醫聯招 英文歷屆試題|第 321 題
107 學年度
Some scientists are busy (21) genes of animals and plants to create new varieties that are (22) to insects and to herbicides. A new, golden-colored rice, high in Vitamin A is also a product of genetic alteration. (23) these "biotech" varieties seem to offer clear advantages, critics continue to reveal the risks of genetic alteration of foods.
- alter
- alteration
- altering
- altered
提示
busy 後面接動詞時須用固定的動詞形式,表示『忙於做某事』。
正確答案
正解:C
詳解
A. alter 為原形動詞,不合 busy 後接動詞須用現在分詞(busy + V-ing)的固定用法。
B. alteration 為名詞,busy 後面不接名詞作為受詞角色,文法不合。
C. altering 為現在分詞,busy + V-ing 為固定用法,意為「忙於更動基因」,為正確答案。
D. altered 為過去分詞,語意會變成「已被更動的」,不合「忙於做某事」的語境。