我国空间科学2012年开始实施“夸父计划”，该计划由三颗卫星组成，其中A卫星设置在距地球150万千米的日地连线上，用来全天候监测太阳活动的发生及其伴生现象．结合所学知识完成下题．

如图是某生物的生殖、发育与遗传的示意图，其中①所示的是受精过程，②所示的是发良过程，请仔细阅读分析回答以下问题：

     A 14-year-old British student is packing for the next day of school: textbooks, notebooks, pens, 250 grams of flour, an egg and some cooking oil. Wait, what? It's not a joke.
      From September, cookery will be a compulsory (必修的) course for kids aged 7-14 in the UK.Primary school students will learn how to put things together and make simple, healthy food.
     At high school, students will then master a number of different meals. They will also learn some cooking skills including baking.
Britain is sometimes known as a country with bad food and unhealthy eating habits. These new courses are part of the country’s effort to bring healthy food back onto the table.
     “One in four British families no longer has a table that everyone can eat around. One out of every two meals we eat is eaten alone. Only four out of ten of us enjoy eating meals with our children,” British writer Joanna Blythman wrote in her book Bad Food Britain: How A Nation Ruined Its Appetite (食欲) in 2006.
     Instead, ready meals have become the first choice for many British kids, because their parents are often too busy to cook a proper meal.
The Department for Education hopes that the cookery courses can introduce children to good food and reduce childhood obesity.
“It's important that children can develop an interest and understanding of good food,” said a spokesman for the department.
    “We want to encourage them to develop a love of food and cooking that will stay with them as they grow up.

一定要幸福

李良旭

       电影《那些年，我们一起追的女孩》有一句精美的台词：“一定要幸福！” 这句话，也是人世间我们亲人最真挚的祝愿。可以峰回路转、可以迢迢渺渺、可以山高水长，但永远不能失去幸福，幸福才是人世间最宝贵的财富。

       18岁那年，天空洒满阳光。我背起一个简单的行李，就要走出家门，一个人出去闯荡了，心中弥漫着一丝兴奋和焦虑。母亲有些慌乱地从屋里出来，又塞给我二付手套，说道：“干活时，一定要戴着手套，不然会把手磨破了。”

       我心里不禁一阵酸涩。母亲为我整了整衣襟，一字一句地说道：“孩子，在外一定要幸福啊，如果感到不幸福就回家。”瞬间，眼睛里噙满了泪水……

       带着母亲“一定要幸福”的叮咛，我开始了独自外出打工。虽然经历了很多事情，也遭遇到了许多挫折和痛苦，但我似乎总能在我的生活中，找到一种幸福感，这种幸福感虽然很卑微、很渺小，甚至在常人眼里有些可笑，不足挂齿，但在我心里却像一片大海，给了我一种巨大的力量和勇气。常常看到自己拥有的那些点点滴滴的小幸福，从而使自己变得坚强、豁达起来。

       母亲打电话，开头第一句话，常常就是，“在外感到幸福吗？如果感到不幸福，那就回来吧！”这句朴实、温暖的话语，一直像清甜的甘露，在我心里荡起层层涟漪和缠绵，仿佛母亲就在我身边，我感受到了母亲那浓浓的怜爱和温暖。

       几年后，我带着一个女孩子回家。母亲见到那女孩子，脸上盛满了喜悦的笑靥。她拉起女孩子的手，只是一个劲的笑，好像不会说话似的。母亲忽然说道：“闺女，和我家娃在一起，你一定要幸福啊！”女孩子听了，脸上飞起两片红霞，羞涩地说道：“阿姨，他是很好的一个人呢，和他在一起，我感到很幸福。”母亲听了，仿佛一颗心重重地放了下来，连声说道：“那就好、那就好！”

       许多年过去了，我一直带着母亲那句“一定要幸福！”的祝福和企盼，行走的人生道路上。我知道，在母亲的心里，没有什么能比儿子生活的幸福更重要了。随着岁月的增长，我知道，幸福是建立在自己是否努力、奋斗了。在努力、奋斗中，我享受到生活赋予我的那些丝丝缕缕的幸福，感受到了人间的妖娆和婆娑。

（选自《青年博览》）

My mother______ to the park every week.