网址:http://m.1010jiajiao.com/timu_id_2243422[举报]
2. This T-shirt is ten d____.
3. You can buy socks for ¥3 e____!
4. We have sweaters in all c____.
5. C____ down to Huaxing and see for yourself.
提示:1. 你喜爱这个歌手的原因。 2. 他的一些生活资料。 3. 注意使用本单元的句型。
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短文填空 先通读下面的短文,然后根据短文内容和所给首字母,在空格内填入一个适当的单词,使短文意思完整。所填单词必须在答题卡标有题号的横线上完整写出。(本大题共10空,每空0.5分,共5分)
In many
countries, people t
__________
1. by car or by bike. They also get from place to place using p__________2.transport
such as buses and trains. However, some people live in parts of the world where
it is i__________3. to build roads. In these places, animals or other forms of
transport have to be used.
It is difficult to w__________ 4. in snow but easy to ski over it. So in places like Alaska, people use skis. If they want to go faster, they get dogs to p__________ 5.them on sleds(雪橇). Riding a snowmobile(雪地摩托) is a more m__________6., but expensive way of getting around on snow.
In desert(沙漠) like the Sahara in North Africa, people s__________ 7.get around on camels. Camels survive w_________8. in the desert, not because they can s_________9.water in their bodies though! They can survive without water for two weeks and without f__________10.for up to a month. He can only go without water for about three to five days.
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根据汉语句子完成英语句子。每空一词。
1.把你的名字写在这张纸上,你就能拿到一本杂志。
your name on the paper and you a magazine.
2.“最美女教师”张老师这些天收到许多花和信件。
Miss Zhang, beautiful teacher, many flowers and letters these days.
3.如果我们利用纸的两面,那更多的钱能被省下来。
More money can if we sides of paper.
4.你应该向他们学习,而不是反对他们。
You should them be against them.
5.中国人更喜欢用筷子,而不习惯用刀叉。
Chinese people use chopsticks a knife and fork.
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实验1:将切除的胚芽鞘尖端放置于琼脂块上(图1),移去尖端后,将琼脂切成体积相等的若干个方块,将方块放在除去尖端的胚芽鞘上,实验进行一定时间后,每个胚芽鞘弯曲的角度以图2的方法测量,并计算平均值。每次放在等面积、等体积琼脂块上的胚芽鞘尖端数量不同,这样重复上述过程。
实验2:用含有不同浓度IAA的琼脂块代替胚芽鞘尖端进一步实验。上述两个实验的结果如图3和图4所示。
(1)绘图表示,如何将琼脂块放置于胚芽鞘上,才能得到图3的结果?
(2)解释实验2的结果:IAA从0μmol/L~1.3μmol/L过程中 ;1.3μmol/L~1.8μmol/L过程中 。
(3)①比较实验1和实验2的结果有什么不同? 。
②为什么会出现这种不同? 。
(4)从本实验可知促进胚芽鞘生长的最适生长素浓度约为_______
图4中曲线上b点对应生长素浓度时胚芽鞘弯曲角度为17度,把琼脂块去掉后,胚芽鞘最终会如何生长?________ 查看习题详情和答案>>