IMO《谷物装运规则》对散装谷物船稳性进行校核时，若满载舱的谷物重心取在体积中心，则

完形填空部分（共20小题；每小题1.5分,满分30分）

阅读下面短文，掌握其大意，然后从36—55各题所给的四个选项（A、B、C和D）中，选出最佳选项。

Anna lived on the side of a valley. One winter, there was a very big flood, and a lot of houses  36   Anna's were washed away. Anna's house was high enough to escape the flood, so when the water had disappeared and the other houses were __37   there with no roof and no walls and all covered with __38   , her house was   39   quite all right.

Her house was quite small, her husband was dead, and she had four children ,   40    Anna took in one of the families that had lost   41    in the flood and she  42   her home with them until it was    43   for them to rebuild their houses.

Anna's friends were   44    when they saw Anna do this. They could not understand why Anna wanted to give   45  so much more work and trouble when she already had quite a few children to   46   .  

"Well," Anna   47  her friends, "at the end of the First World War, a woman in the town where I  48   lived found herself very poor, because her husband   49    in the war and she had a lot of children,   50    I have now. The day before Christams, this woman said to her children, ‘We won’t be able to have much for   51    this year, so I’m going to   52    only one present for all of us. Now I’ll go and get it.’ She came back   53    a girl who was even poorer than they, and who had no parents. ‘Here’s our present, ’ she said to her children. The children were    54    to get such a present. They welcomed the little girl, and she grew up as their sister.   55    was that Christmas present.”

36．A．down below       B．just around         C．next to       D．above

37．A．rising B．appearing  C．falling         D．standing

38．A．water         B．trees C．dust   D．mud

39．A．just    B．already       C．yet     D．still

40．A．so       B．but     C．for      D．since

41．A．nothing      B．everything C．anything    D．something

42．A．made B．found C．shared        D．built

43．A．possible     B．necessary  C．important  D．valuable

44．A．worried      B．disappointed      C．puzzled      D．impressed

45．A．them B．herself        C．them all     D．her

46．A．support      B．supply         C．grow  D．keep

47．A．explained to       B．asked for   C．talked with         D．spoke as

48．A．actually      B．then   C．before        D．later

49．A．had killed   B．might be killed   C．had been killed  D．killed

50．A．for      B．as       C．like     D．that

51．A．you     B．us       C．Christmas D．your birthday

52．A．get     B．send  C．buy     D．make

53．A．for      B．from  C．like     D．with

54．A．sad     B．happy         C．worried      D．sorry

55．A．It        B．She     C．Such   D．I

《技术进出口管理条例》规定，技术出口经许可的，由主管部门颁发技术出口许可证，技术出口合同的生效时间为( )

A．自技术出口许可证颁发之日起生效
B．技术出口许可证颁发后3日内的任何时间均可生效
C．自登记之日起生效
D．双方约定的时间内生效

当土地在春季被犁时，整个冬季都埋在土壤里的藜的种子被翻到表面，然后重新沉积到表层的正下面，种子短暂的曝光刺激了感受器。感受器在种子埋在土壤里的那几个月期间已对太阳光变得高度敏感。受刺激后的感受器激发种子发芽。没有漫长的黑暗和随后的曝光，藜的种子就不会发芽。
上面的陈述，如果正确，能最强有力地支持下面哪一个关于一块将要在春季被犁的土地，且有藜的种子整个冬季都被埋在它的土壤里的陈述

A．这块土地在夜晚犁要比在白天犁生长的藜类植物少。
B．这块土地根本就不犁要比它仅在夜晚犁生长的藜类植物少。
C．刚好在日出前犁这块地要比刚好在日落后犁这块地生长的藜类植物少。
D．在犁地的过程中，被翻到土壤表层的藜的种子不会发芽，除非它们被重新沉积到土壤表层的下面。
E．在这块土地被犁之前，所有已经位于土壤表层的藜的种子都会发芽。

真菌既不含叶绿素，也没有质体，是典型的异养生物。

下列关于除碳器原理的说法，正确的是（）。

A．降低水面上的压力可除去水中溶解的二氧化碳

B．降低水面上的二氧化碳的分压力就可除去水中溶解的二氧化碳

C．降低二氧化碳的分压力，就可除去水中溶解的二氧化碳

D．降低水面气体的压力，就可除去水中溶解的二氧化碳