首页 > 人的胚胎形成就可称为胎儿。[]-八年级生物
更多内容推荐
-
人和其他动物的发育起点是[]A.精子B.卵细胞C.受精卵D.新生儿诞生-八年级生物
-
生命的产生是从下列哪项开始的?[]A.受精卵B.胎儿-七年级生物
-
阅读理解。 People realize that, although animals may not have the same intelligence (智力) as human beings,
-
阅读理解。Dear Lan Lan,I'm now writing to you at Hartsop, a village in the Lake District, a place to
-
阅读理解。People often say, "Even without stepping out of my house I know all that has been happenin
-
完形填空。 We find different kinds of animals in the world. Some animals, such as tigers and lions live i
-
阅读理解。 When you want to go shopping, decide how much money you can, spend for new clothes. Think abou
-
阅读理解。 Department stores sell ready-to-wear clothing, which is also called ready-made clothing. Such
-
阅读理解。 I'm lying on my back in my grandfather's orchard (果园), looking up at the branches ab
-
阅读理解。 In the past, American families tended to be quite large. Parents raising five or more children
-
王梅发现她家新买的白炽灯用过一段时间后,在相同电压下发光时要暗一些,从物理学的角度看是因为灯发光时,温度升高,灯丝发生了现象(填物态变化的名称),使灯丝变细,导致灯-八年级物理
-
下列物态变化中属于升华现象的是()A.夏天,冰棍冒出的“白气”B.放在衣柜里面的樟脑丸变小了C.花盆中潮湿的泥土变干了D.冬天,湖面封冰-八年级物理
-
如图1所示的各种自然现象的形成过程,属于凝华的是-九年级物理
-
雨、露、霜、冰都是自然界中水的“化身”,其中由空气中的水蒸气凝华而成的是A.雨B.露C.霜D.冰-八年级物理
-
衣橱中的卫生丸时间长了会变小,原因是发生了(填写一种恰当的物态变化);冰箱冰冻层的雪糕上沾有霜花,原因是发生了.-八年级物理
-
阅读理解。Dear Sir, I'm writing to complain about the service offered by your company. I told your
-
阅读理解。 In the past, when people had problems, they went to their families or friends to get advices.
-
阅读理解。 Do you know something about the holiday camps in Hong Kong? The students in Hong Kong used to
-
阅读理解。Dear Sir, I have to travel every day from Souk Road to the airport. Two buses travel along thei
-
阅读理解。 A child's birthday party should be one of the most fun events of the year, for the birthd
-
阅读理解。 Anybody running a company knows that a well-planned conference can greatly improve performance
-
任务形阅读。 We all look forward to vacations. They can give our daily life colorful meaning. Moreover, in
-
完形填空。 The morning in London was wet, wet, wet. I had to check out from the1before noon, and then I w
-
阅读理解。 My topic today is the Internet. It was prompted (引出) by the first letter, which I am unable to
-
阅读理解。 Let children learn to judge their own work. A child learning to talk does not learn by being c
-
完形填空。 The eyes are one of the most expressive instruments of body language. Keith, seventeen, from M
-
下面是一篇应用文及其应用场合的信息,请阅读下列应用文和相关信息,并按照要求匹配信息。选项中有一项是多余选项。阅读下面六款手机的介绍,选出符合各人需求的最佳款式。 -高二英语
-
Children and teenagers who spend lots of time in front of screens---especially TVs---are easier to g
-
Climate change could affect food supplies, water resources, human health and homes.If greenhouse gas
-
Nuclear power’s danger to health, safety, and even life itself can be summed up in one word: radiati
-
Health experts are calling for action to increase cancer care and control in the developing world. A
-
As we get older, the fear of not having a good memory grows for many people. A lot of people 48that
-
When it comes to eating smart for your heart, stop thinking about short-term solutions and simplify
-
Overweight has been a great concern for some people. In an attempt to keep normal weight, people hav
-
Since 1950, the amount of information about the nutrition of food has increased by nearly 900 percen
-
Lots of folks don't think about what they eat over the holiday season until January, when they
-
Every hour spent in watching TV, DVDs and videos as an adult reduces life expectancy by almost 22 mi
-
The clock rules our lives. The more we try to save time, the less time we seem to have. In every are
-
There are many ways to keep kids of all ages physically fit besides sports.If your child is a natura
-
If you haven’t heard or seen anything about Road Rage in the last few months, you’ve probably been a
-
In the United States, 30 percent of the people have a “weight problem”. To many people the cause is
-
Many grown-ups worry that spending too much time playing video games isn’t good for a kid’s health.
-
Is there anything more important than health? I don’t think so. “Health is the greatest wealth.” wis
-
阅读下面短文,从每题所给的四个选项中,选出最佳答案。Hi, dear boys and girls! Do you know how to be a healthy kid? Here are som
-
American farmers are raising five percent more goats for meat these days. Goat meat is high in prote
-
We all have ideas about what kinds of foods are good to eat. We also have ideas about what kinds of
-
About ten men in every hundred suffer from color blindness in some way. Women are luckier; only abou
-
Not long ago , Richard Denniston found himself suffering the same pain that millions of other pet ow
-
Growing numbers of people are becoming addicted to text messaging(手机信息), a German doctor warned rec
-
Scientists say they have discovered a promising treatment for sleeping sickness, a killer disease th
题目简介
人的胚胎形成就可称为胎儿。[]-八年级生物
题目详情
答案