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【简答题】
核糖体肽链的合成因______而终止。 A．可读框内编码C端氨基酸的密码子 B．可读框内存在不对应氨酰tRNA的密码子 C．浓度太低或缺少特定的氨酰tRNA D．释放因子(RF)的GTP依赖性作用，防止A位点中终止密码子与氨酰tRNA的错配结合 E．末端氨酰转移酶的活性，这个酶蛋白通过将一个赖氨酸或精氨酸残基加到新生多肽C端将肽酰tRNA脱乙酰化
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【简答题】Fill in the blanks with proper words or phrases. (A. well off B. liquidity C. inventory D. wiped out E. overheads F. cash flow G. ledger H. invoices I. balance sheet) Arrived in Berlin...
【多选题】complete the paragraph with the words provided.
A.
banister
B.
porch
C.
boughs
D.
cart
E.
barn
F.
hovering
G.
hearth
H.
tulips
I.
nostalgia
J.
blossom The elderly lady looked out of the window onto her beautiful garden, which was full of (1)____. The (2)_____ of the apple trees were heavy with white (3)_____. The doorbell rang and she went slowly downstairs, carefully holding on to the (4)_____. The postman was (5)____ on the front (6)_____. Seeing the elderly lady, he held out a letter with a foreign stamp. “Thank you,” she said, “that’s a letter from my nephew.” Looking down the road, she saw a horse pulling a (7)____ full of hay towards the (8)____. The sight reminded her of her childhood holidays from which she still remembered with (9)_____. She closed the toll and settle down in her armchair by the (10)_____ and put on her glasses to read her nephew’s letter. He was spending a year in Spain and he was probably feeling a little homesick.
【简答题】Directions: Fill in the blanks with words or phrases. A. consists of B. was familiar with C. whatsoever D. in addition to E. available F. take...for granted G. was located H. w...
【单选题】H e went out with an umbrella in case it would rain.
A.
他出去带了一把伞，生怕下雨。
B.
他出去带了一把伞，以防下雨。
C.
他出去带了一把伞，以防万一下雨。
D.
他出去带了一把伞，以防它要下雨。
【简答题】a. T ake .. . for example b. factor .. . i n / factor in .. . c. is projected to d. on a large scale e. in hopes of f. stick to .. . g. clear up h. voice an opinion on i. le ft ... with no choice but ...
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