2020年六年級生物下冊 第三單元 第二章 第三節(jié) 開花和結(jié)果評測練習(xí) 魯科版（五四制）

2020年六年級生物下冊 第三單元 第二章 第三節(jié) 開花和結(jié)果評測練習(xí) 魯科版（五四制）一、 選擇題1. 胚珠著生在（ ）。A. 花瓣中 B.雄蕊中 C.柱頭中 D.子房中2. 桃花中能產(chǎn)生花粉的結(jié)構(gòu)是（ ）。A. 花藥B.花絲 C.柱頭 D.子房3. 花粉在萌發(fā)過程中產(chǎn)生花粉管，當(dāng)花粉管進入（ ）時釋放出精子。A.柱頭 B.花柱 C.子房 D.胚珠4. 精子與卵細胞結(jié)合形成受精卵的過程叫（ ）A.開花 B.傳粉 C.受精 D.結(jié)果5.小麥花的主要部分是（ ）A.雌蕊和雄蕊B.花托和花柄C.花瓣和花萼D.果實和種子6.玉米開花時如果遇上連陰雨的天氣，產(chǎn)量就會降低，下面解釋正確的是（ ）。A.風(fēng)大、氣溫低，花粉不能成熟 B.花粉被雨水沖落，影響風(fēng)力傳粉C.風(fēng)大、氣溫低，影響昆蟲傳粉D.陰雨天子房不能發(fā)育7.下圖是桃花結(jié)構(gòu)圖，請回答下列問題：（1）圖中（ ）構(gòu)成雄蕊，花粉中（ ）中。（2）圖中（ ）構(gòu)成雌蕊。 答案：1.D 2.A 3.D 4.B 5 .A 6.B 7.(1)2、3 2 (2)1、4、5附送：2020年六年級英語上冊Unit1Igotoschoolat800Lesson1教案人教精通版2 How to express using their daily life.Teaching aids word cards and multi-media Teaching stepsStep 1. Warming-up and Revision1.    T: Look , what time is it? Ss try to answer. Use the real clock to learn how to read the time. (1) 直接讀數(shù)。 E.g 整點:8:00 - eight. 幾點過：9:16 - nine sixteen.(2)過幾分用past。（1-30分） 9:16 - sixteen past nine. 半點： 9：:30.half past nine(3) 差幾分幾點用to。（31-59分） 10:52eight to eleven.   say the time.  9:30, 7:00, 11:45， 3:30, 6:30Step 2. PresentationLearn the words： in the morning = am get up           6:00                  go to school     7:00have breakfast   7:30 have classes     8:10 have lunch       12:20in the afternoon = pm have classes again  1:30     school is over.     4:10 go home             5:00 have dinner         6:15 watch TV            after dinner go to bed           10:002.    T: This is my daily life, how about your daily life?(老師在講授自己的日常生活的時候隨時問學(xué)生，以達到邊學(xué)邊練習(xí)的目的) The Ss talk about their whole daily life.(the teacher will give them about 5minutes to practice)3.    學(xué)習(xí)e-mail 的格式。T: today I got an e-mail from Miss Song. Look.Read the e-mail together, then answer the questions:(1)Where is Miss Song from?(2)When does she go to work?(3)When does she do some listening?Step 3 Practice1.    Listen to the tape, feel the Chinese.2.    Listen and repeat , pay attention to the pronunciation.3.    Read by themselves, find out what you cant understand.(每一遍都給學(xué)生的任務(wù)，讓學(xué)生帶著問題去聽或是讀課文)4.    Teach :  about 大約，關(guān)于。By e-mail 通過郵件，make a sentence.（造句練習(xí)加深對詞義認(rèn)識，提高單詞的使用能力）5.    Do some exercises:(1)Let me tell you _ his family.A. in   B. of   C. about  D. for(2)Please get up _ 6:00 in the morning.A. at   B. in   C. for  D. about(3)I have lunch at _ .A. 7:00   B. 11:50  C. 19:15 D. 23:10(4)Class _ over at 4:00.A. is   B. begins   C. are  D. have Step 4 summary     What do you learn?Step 5 Homework1.    Read the e-mail 10 times.2.    Try to write an e-mail for your classmate.3.    Preview next lesson.