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【简答题】
在探究“馒头在口腔中的变化”时,进行了三种处理:①将馒头碎屑与唾液放入1号试管中充分搅拌;②将馒头碎屑与清水放入2号试管中充分搅拌③将馒头块与唾液放入3号试管中不搅拌.试问: (1)以“牙齿的咀嚼、舌的搅拌”为变量时,取______两组作对照. (2)以“唾液”为变量时,取______两组作对照. (3)若将3支试管都放入37℃左右温水中,5~10分钟后取出,______号试管中的物质遇碘后不变蓝.由此你会联想到______. (4)我们在制定这项探究计划时,有同学提出:“除了以上三种处理外还要进行第四种处理,就是将馒头块与清水放入试管中不搅拌”.你认为这第四种处理______必要(填“有”或“不”)
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举一反三
【单选题】听力原文:W: Morning. Gail. Did you enjoy your holiday in the country M: Yes. We had a great time. And some friends went along with us. W: Where did you stay In a hotel M: No. We camped in the mountains. W...
A.
In a farm house.
B.
In the open.
C.
At a hotel.
【简答题】on Saturday I went camping with some friends I met online. They are all camping lovers. We had a great day by Southern Lake. We even _____________for a barbecue.
【简答题】10 ( ) 1 ___ Tom gets up at five in the morning. A. Sometime B. Sometimes C. Some time D. Some times ( ) 2 I remember we met each other___ last year. A. Sometime' B. some times C. some time D. sometim...
【单选题】患者,女性,28岁,化脓性扁桃体炎,需注射青霉素,在做青霉素过敏性试验时患者出现过敏性休克,请问过敏性休克最早出现的症状是
A.
呼吸道症状
B.
消化道症状
C.
中枢神经系统症状
D.
循环衰竭症状
【简答题】Martin: We met last year at the exhibition. You don’t remember. Oh, 1———————— In fact, we are 2.——————————— your company, and have prepared some paperwork for further discussion with you. Lawrence: Th...
【单选题】通常其边长比或长宽比等于或大于( ),当有荷载作用于板上时,绝大部分力是由短跨方向传递的,因此可近似地按仅由短跨承受荷载的单向受力板来设计。
A.
2
B.
3
C.
4
D.
5
【简答题】Listen to a speech and fill in the missing information: Ensuring every child gets a great education.mp3: Hi everybody. I'm speaking with you from the DC Public Library in Anacostia, where I just met w...
【单选题】患者,女性,28岁,化脓性扁桃体炎,需注射青霉素,在做青霉素过敏性试验时患者出现过敏性休克,请问过敏性休克最早出现的症状是
A.
呼吸道症状
B.
消化道症状
C.
中枢神经系统症状
D.
循环衰竭症状
E.
泌尿道症状
【多选题】Section
A.
In this section, you will read a story about my day. Please fill in the blanks with the given words. 在本节中,请阅读关于我的一天的故事,在空白处填入合适的选项。 I have a 1 _ day last week. I went to the park with my friends. We met at 8 2 _ the school gate. We went to the park by 3 _ . It was sunny. We sat under a big tree and 4 _ with each other. We talked about some funny things and had lunch there. Then we played some games. We all felt tired, 5 _ we were very happy! It was a great fun. Section
B.
In this section, you will read the introduction about Shanghai. Please fill in the blanks with the given words. 在本节中,请阅读关于介绍上海的短文,在空白处填入合适的选项。 Shanghai, an 6 _ city, is in the east of China. 7 _ its world-famous landmarks, such as the Oriental Pearl TV 8 _ , Xintiandi and Lujiazui Financial center ( 金融中心 ). Shanghai has become the most travelers’ tourist destination. And 9 _ you enjoy shopping, you can visit Nanjing Road. Many goods will 10 _ your eyes. If you enjoy eating delicious food, don’t forget to visit Yu Garden. It’s your choice—Shanghai.
【简答题】通常对于周边支承的(),当其连长比或长宽比等于或大于2时,便可近似地按仅按()来设计,而长跨方向只要配置适当的构造钢筋即可。
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