【简答题】A.choose B.use C.hold out D.pick out
【单选题】Owing to no hotel to book, I have to ______ with my friend during my visit to Swiss.
【单选题】Who was the first to pick out eidos?
【单选题】下列化合物中,能构成蛋白质的氨基酸有 [ ]
【单选题】It took Joan a long time to _______ a new dress at the store.
【单选题】蛋白质由氨基酸构成,常见构成蛋白质的氨基酸有 多少种?
【单选题】Only in this way _____ her boyfriend in the crowded street. [ ]
【简答题】构成蛋白质的氨基酸有( )种,借( )聚合成蛋白质
【单选题】Can you ________ your sister from that group of girls?
【简答题】构成蛋白质的氨基酸有( )种,必需氨基酸有( )种。