皮皮学,免费搜题
登录
搜题
【单选题】
Everyone knows the small insects called mosquito. It is possible to find mosquitoes in almost every part of the world except in the places where it is extremely cold or where it is very dry. During the summer, it is almost certain that you can find many mosquitoes near swamps (沼泽), ponds, and lakes. Mosquitoes have an interesting life cycle. The female mosquito bites a person or animal in order to get some blood. She needs this blood before she can lay her eggs. Second, she flies to an area of water and deposits (存放),40 her eggs in the water. In a few days the eggs open, and the baby mosquitoes, called larvae, come out. In a short time, they will be mature and fly away. It is interesting to note that only the female will bite for blood. She has a special mouth which can go into an animal's skin or a person's skin. On the other hand, the male mosquito can only drink plant juices with his mouth. The author suggests that all mosquitoes like ______.
A.
blood
B.
wet areas
C.
cold weather
D.
dry climates
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
.
..
皮皮学刷刷变学霸
举一反三
【单选题】—— Lucy! See what your uncle has bought for you. —— Oh, what a nice skirt!  I ___ he ___ to bring me a gift.
A.
never think; is going
B.
never thought; was going
C.
don’t think; is going
D.
shouldn’t think; was going
【简答题】在图所示的摆动导杆机构中,已知曲柄AB以等角速度ω 1 =10rad/s转动,l AB =100mm,l AC =200mm,l CK =40mm。当φ 1 =30°、120°时,试用解析法求构件3的角速度ω 3 和角加速度α 3 。
【单选题】女,25岁,咳嗽、胸痛半年,诊断为肺结核,进行抗结核治疗。其中异烟肼(按一级动力学消除)的T1/2是4小时,给药1g后血浆最高浓度为2 mg/L,如果每4小时给药1g,连续用药多少时间达到或接近4mg/L
A.
8 小时
B.
24小时
C.
2天
D.
不可能
【单选题】-- What a pity! You missed the beginning of the movie, it __ for 10 minutes. -- Oh, a traffic jam!
A.
began
B.
stated
C.
has been on
D.
has been off
【单选题】大飞机是国之重器。上世纪八十年代 , 我国中止大于飞机研制 , 转为与国外合作组装生产 , 但在长期合作过程中并没得到核心技术。九十年代后期我国转向自行研制 , 经过十多年攻坚 , 大飞机终于在 2015 年成功下线。材料启示我们 , 发展战略性产业应
A.
坚持独立自主、自力更生的原则
B.
不断提高我国经济的国际化水平
C.
把 “ 引进来 ” 和 “ 走出去 ” 有机结合
D.
把跨国公司作为实施 “ 走出去 ” 战略载体
【单选题】下列哪项不是缺氧性细胞损伤的表现
A.
ATP生成减少
B.
溶酶体破裂
C.
K + 外流增多
D.
Ca 2+ 外流增多
E.
细胞外 H + 浓度增高
【单选题】下列哪项不是缺氧性细胞损伤的表现
A.
ATP生成减少
B.
溶酶体破裂
C.
Ca 2+ 外流增多
D.
K + 外流增多
E.
细胞内钠水潴留
【单选题】对微机配置描述为“P4/3.0G/1G/100G/52X/17/多媒体”,其中内存为()。
A.
3.0G
B.
1G
C.
100GB
D.
52X
【简答题】在图示摆动导杆机构中,已知 L AB =60mm , L AC =120mm ,曲柄 AB 以等角速度ω 1 =30rad/s 转动。试用矢量方程图解法求当∠ BAC = 90 °时, 导杆 3 的角速度和角加速度。
【单选题】— Oh! What a pretty toy car! Dad, would you be kind enough to get ____ for me? — What? Didn't I buy ____ for you as a birthday present? [     ]
A.
this; that
B.
that; it
C.
one; this
D.
it; one
相关题目: