染色体长臂（） A．del B．inv C．P D．q E．mos 发布时间：2019-04-04 05:32 │ 来源：www.tikuol.com 题型：单项选择题 问题： 染色体长臂（）A．delB．invC．PD．qE．mos
题型：单项选择题 根据短文内容，选用适当的词填空。bamboo, climb, animals, wild, thousand, Europe, kilos, water, jungle, snakes Look at this animal. It's big. It's black, yellow, golden and orange. It has two big eyes and two big ears. It's a tiger. It can run fast(快). Some tigers live in the (1)______. They like to eat meat. They do not eat fruit. They often catch and eat small (2)______, they usually eat six (3)______ of meat a day. Look at that fat animal. It is white and black. It is very cute(惹人喜爱). Its name is panda. The panda has big black eyes, a short tail and a white fat body. It can (4)______ the tree. Some pandas live in (5) ______ grove(林子) and the other pandas live in the zoo. Pandas like bamboo and grass. They usually eat 15 bamboo a day. They often drink water. They only live in China. There're about one (6)______ and six hundred pandas in the (7)_______ in China. So they are very few. We must safeguard(安全保护) them. Let them be our friends. There are lots of (8)_______, they can live in Asia, America, Africa, Australia and (9)________. They eat meat, too. It doesn't like (10)_______. 查看答案
题型：单项选择题 下列关于生物生殖发育的描述中错误的是（ ）A．卵细胞在输卵管内受精，到达子宫后，才开始进行细胞分裂B．嫁接和扦插能保持亲本植物的性状C．蚊、果蝇、蜜蜂、蝴蝶等进行完全变态发育D．真菌一般是通过孢子繁殖后代的 查看答案
题型：单项选择题 在抹灰工程中把水泥和砂、水拌合可以配制抹灰用的水泥砂浆，水泥与色石渣可配制各种假石的面层和水磨石，与豆石、砂可配制豆石混凝土，水泥砂浆和水泥混合砂浆可用作铺贴饰面块板的结合层……用途十分广泛。( ) 查看答案