18. What her mother said made such a great _______ to her life that she achieved her dream of
being a poet later.
|
A.
influence |
B. difference |
C. devotion |
D.
relation |
17. -Why! I have nothing to write about. _______ that you want me to say?
-Your summary for this term and holiday schedule.
|
A. What
is it |
B. What
it is |
|
C. What
are they |
D. What
they are |
16. -_______ we move the furniture over there? Do you think it will make more room?
- I can’t agree with you more.
|
A. How
about |
B. What
if |
C. What
about |
D. How
come |
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并标在试卷的相应位置。
15. April Fool's Day is _______ day when strange things may happen and the best trick is the one
that makes everyone laugh, including _______ “fool”.
|
A. the;
a |
B. a; a |
C. the;
the |
D. a;
the |
第二节 请听下面3段对话，选出最佳选项。每段材料读两遍。(共9小题; 每小题1分)
请听下面一段对话, 回答第6至第8 三个小题。
6. What can you learn about the room?
|
A. It’s
small. |
B. It
faces the street. |
C. It’s
for non-smokers. |
7. How many nights will Richard stay in the hotel?
|
A. Two
nights. |
B. Three
nights. |
C. Four
nights. |
8. How much will Richard probably pay?
|
A. $
104. |
B. $
114. |
C. $
140. |
请听下面一段对话, 回答第 9至第11三个小题。
9. Why is the man here?
|
A. To
visit an old friend. C. To do something different. |
B. To
get away from everyday work. |
10. What have the speakers been doing together?
|
A. Doing
business.
B. Going sightseeing. C.
Attending a meeting. |
11. What does the woman plan to do next September?
|
A. Visit
the man. |
B.
Change her job. |
C. Make
a travel plan. |
请听下面一段对话, 回答第 12至第14三个小题。
12. Where are the two speakers?
|
A. In a
concert hall. |
B. In
Mozart’ s home. |
C. In a
modern museum. |
13. What does the man like best in this place?
|
A. The
lights. |
B. The
paintings. |
C. The
colours. |
14. What do you know about the two speakers?
|
A. They
are having a good time. C. They’re uninterested in upper-class life. |
B. They
wish to become rich soon. |
第一节 请听下面5段对话，选出最佳选项。每段对话仅读一遍。(共5小题; 每小题1分)
1. When does the man say the film will start?
|
A. At
8:05. |
B. At
8:15. |
C. At
8:30. |
2. What is the probable relationship between the two speakers?
|
A. Pop
star and fan. C. Interviewer and interviewee. |
B. Boss
and secretary. |
3. Where does the conversation probably take place?
|
A. In a
restaurant. |
B. In an
office. |
C. In a
shop. |
4. What can you know about the talks?
|
A. They
haven’t started yet. C. They haven’t achieved much. |
B. They
haven’t reached any agreement. |
5. What does the man ask the woman to do?
|
A. Look
after something for him. |
B. Tell
him some travel information. |
|
C. Show
him the way to the left-luggage office. |
高杆抗锈病小麦×矮杆不抗锈病小麦
F1
雄配子
幼苗46．
(6分)为探究“植物生长调节剂对扦插枝条生根的作用”，
某小组的同学进行了有关的实验。请分析回答。
(1)实验原理：植物生长调节剂对扦插枝条生根作用的一般规律是 ▲ 。
(2)上图为由10mL10-8mol/L的2,4－D溶液配制系列浓度的操作示意图(由10mL10-8mol/L的2,4－D溶液的烧杯中取1mL至2号烧杯中，再向其中注入9mL水，摇匀后取1mL至3号中，以此类推)，对5号试管中的2,4－D溶液的操作还有 ▲ ，该操作体现对照实验的 ▲ 原则。
(3)为确定某浓度的2,4－D溶液对生根是促进还是抑制，应向6号烧杯注入 ▲ 。
(4)下表为该小组实验数据记录表。由数据可知，从 ▲ (浓度)开始抑制生根。
|
2,4-D浓度(mol/L) |
0 |
10-12 |
10-11 |
10-10 |
10-9 |
10-8 |
|
生根长度的平均值(mm) |
8.0 |
9.4 |
15.1 |
20.3 |
17.3 |
7.3 |
(5)该实验还可以用 ▲ 作为观察记录的指标。
44．
(7分)下图1表示某生态系统中构成一条食物链的甲、乙、丙、丁4个种群的数量变化，图2表示某植食性昆虫迁入该生态系统后的种群增长率变化曲线。
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(1)请根据图1中甲、乙、丙、丁4个种群数量变化的关系，写出它们构成的食物链 ▲ 。从图中看出，当甲种群达到K值后，乙种群的K值变化是 ▲ (填“早于”或“晚于”)甲的K值出现(不考虑其他生物因素)。
(2)甲种群在c点处的年龄组成类型是 ▲ ，a-b段种群数量下降的原因有：
① ▲ ；② ▲ 。
(3)在图2的 t0 -t2时间内，种群数量增长曲线呈 ▲ ；在t1 -t2时间内，种群的出生率 ▲ (填“大于”、“等于”或“小于”)死亡率。