[判断题]电芯叠片完成后，电芯最外面均为负极片。
A.正确
B.错误

Dick was a clever boy, but his parents were poor, so he had to work in his spare time and during his holidays to pay for his education. (21) this ,he managed to get to the university, but it was (22) expensive to study there that during the holidays he found it necessary to get two jobs at the same time (23) enough money to pay for his studies.
(24) he managed to get a job in a butcher’s shop during the daytime, and another in a hospital at night .In the shop, he learnt to cut meat up quite nicely, so the butcher often left him to ", all the serving while he went into a room behind the shop to the accounts. In the hospital, (25) he was, of course, allowed (26) only the simplest job, like (27) to lift people and to carry them from one part of the hospital to another. Both at the butcher’s shop and at the hospital, Dick had to wear white clothes.
One evening at the hospital, Dick had to help to carry
A. so as earning
B. so as earn
C. as to earn
D. so as to earn

There once lived a poor tailor who had a son called Aladdin, a careless, idle boy (21) would do nothing but play all day long in the streets with little idle boys like himself. This so grieved the father that (22) died; yet, in spite of his mother’s tears and prayers, Aladdin did not (23) his ways. One day, when he was playing in the streets as usual, a stranger (24) him if he was not the son of Mustapha the tailor. "I am, sir," replied Aladdin, "but he died a (25) while ago." On this the stranger, who was a (26) magician, fell on his neck and kissed him saying: "I am your uncle, and (27) you from your likeness to my brother. Go to your mother and tell her I am coming." Aladdin ran home and told his mother of his newly (28) uncle. "Indeed, child," she said, "your father had a (29) , but I always thought he was dead." However, she prepared supper, and told Aladdin
A. unknown
B. strange
C. sad
D. famous