我们见到树的叶片总是正面颜色深一些,背面颜色浅一些,其中的原因是靠近正面的[ ]

题型:选择题

问题:

我们见到树的叶片总是正面颜色深一些,背面颜色浅一些,其中的原因是靠近正面的[ ]

A.栅栏组织的细胞整齐、紧密,有较多的叶绿体  

B.海绵组织的细胞排列疏松,有较多的叶绿体  

C.海绵组织的细胞整齐、紧密,有较多的叶绿体  

D.栅栏组织的细胞疏松,有较多的叶绿体

考点:叶片的结构
题型:选择题
阅读理解。
HELP WANTED
Do you like babies?
Can you look after one baby for two days?
If you are sure to take good care of it, call us at 8766588.
$80 or more. Today! Hurry!
JOIN OUR FOOTBALL TEAM
Boys and girls wanted to play in local football team.
Aged 9-13.
Meet in Green Park at 3 p.m. on Friday
CLEANER WANTED
Can you make a large house clean and tidy? If you hope to get the job paid at $20 once, call us
this evening 18:00~20:00.
Tel: 8633800
1. If Hellen calls at 8766588, maybe she wants to ______.
[ ]
A. play in local football team
B. take good care of the baby
C. clean and tidy the large house
2. When you are 12 years old, you ______ join our football team.
[ ]
A. can
B. can't
C. must
3. Do you want to join our football team? Please come to Green Park ______.
[ ]
A. today
B. this evening
C. at 3 p.m.on Friday
4. If Jane makes the large house clean and tidy three times, she'll get ______.
[ ]
A. $20
B. $60
C. $80
题型:选择题

急腹症手术麻醉正确的是

A.如采用全麻应酌情选用对循环影响小的药物如芬太尼

B.尿量维持在30ml/小时以上,

C.呼吸循环功能稳定的患者可选用硬膜外麻醉

D.麻醉维持多采用复合麻醉

E.保持血压在80mmHg以上

题型:选择题

机械手换刀时,需要编缉主轴定向,它的指令应是()。

A.M06

B.M05

C.M19

D.M00

题型:选择题

总承包单位必须建立“农民工夜校”,不属于其管理资料的是()。

A、“农民工夜校”组织机构及人员名单

B、“农民工夜校”宣传资料

C、农民工教育师资队伍名录及证书、证明

D、“农民工夜校”培训记录

题型:选择题

对某大学新生膳食调查结果显示:人均每日能量摄入量为2600kcal,蛋白质为75g,脂肪78g,其脂肪供能占总能量的比例(%)是()

A.18

B.21

C.25

D.27

E.30

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