问题 单项选择题

在河流水深10~50m时,设置采样点数目为( )。

A.1个样
B.2个样
C.3个样
D.5个样

答案

参考答案:C

解析: 水深10~50m,设三个点,水面下0.3~0.5m处和河底以上0.5m处各设一个,1/2水深处设一个。

判断题
完形填空

第三部分: 完形填空(共20小题;每小题2分,满分40分)

阅读下面短文,从短文后各题所给的四个选项(A、B、C和D)中,选出空白处的最佳选项,并在答题卡上将该项涂黑。

The back door of the ambulance was suddenly shut and the driver ran to the front, jumped into the seat, and started the engine。 Inside were the   26   parents, Mr。 and Mrs。 Green。 The mother was holding their baby daughter, Ally。 The girl had some   27   stuck in her throat and could   28   breathe。

The driver, Mr。 White, turned on his siren(警报器) and sped towards the  29   hospital, fighting against the time。 The   30   ahead of him pulled out of the way   31   he drove through the busy traffic。 From the back of the   32   the parents were shouting at him to be         __33  , since Ally had almost stopped   34 。 In front of him he saw some traffic   35  , with the red “Stop” light shining。 Mr。 white knew he had no time to   36  , so he drove straight through the traffic lights。

Coming towards him from his right was a taxi with the   37   closed, and the driver was playing his radio, He did not   38   the ambulance。 The lights were green;   39   he drove straight on into the ambulance。

Mr。 White tried to stop his ambulance, but it was too   40 。 It hit the taxi。 Everyone was shaken, but no one was hurt。 Mr。 White looked to see   41   little Ally was。 He was astonished to see relief(宽慰) instead of   42   on the faces of the parents。

“Look!” cried Mrs。 Green。 “She is breathing again。”

“It   43   have been the crash,” said her husband, “It   44   the food out of her throat。”

The baby’s color was turning   45  , and she was crying in a loud but healthy voice。 They were all joyful, and quite forgot about the accident。

26。 A。 worried                  B。 angry             C。 satisfied                D。 surprised

27。 A。 honey                   B。 drinks            C。 food                     D。 water

28。 A。 never                     B。 almost           C。 hardly                   D。 simply

29。 A。 modern                 B。 promising      C。 children’s           D。 nearest   

30。 A。 interviewers           B。 drivers          C。 cars                      D。 parents

31。 A。 that                       B。 as                  C。 if                         D。 as though

32。 A。 street                     B。 cars               C。 traffic                   D。 ambulance

33。 A。 quick                     B。 convenient     C。 anxious             D。 calm

34。 A。 breathing               B。 circulating      C。 saying                   D。 talking

35。 A。 signs                      B。 policemen      C。 lights                    D。 marks

36。 A。 stop                       B。 spare             C。 lose                      D。 miss

37。 A。 engine                   B。 car               C。 door                     D。 window

38。 A。hear                       B。 see                C。 find                  D。 notice

39。 A。 however                 B。 so                  C。 but          D。 on the other hand

40。 A。 dangerous              B。 late                C。 careless                 D。 quick

41。 A。 how                       B。 what              C where                       D。 who

42。 A。 pleasure                     B。 anger             C。 fear                      D。 surprise

43。 A。 may                       B。 can               C。 should                  D。 must

44。 A。 took                      B。 picked           C。 knocked                D。 pulled

45。 A。 common                B。 normal           C。 general                 D。 ordinary