指出下列词语中有错别字的一项[ ] A.稀稀落落 难以置信 B.遮天蔽日 沉默寡

题型:选择题

问题:

指出下列词语中有错别字的一项[ ]

A.稀稀落落 难以置信

B.遮天蔽日 沉默寡言

C.万籁具寂 万物鼎盛

D.袅袅烟云 山崩地裂

考点:字形
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纳入体系文件的格式化合同可通过体系文件讨论的方式审核。

题型:选择题

麦兰花学名叫香雪兰,花开时节香味醉人.小红家里的阳台上种植了一盆麦兰花,她发现爸爸把草木灰洒在麦兰花盆里,麦兰花长得特别旺盛,她想知道草木灰的主要成分是什么?于是,她取一些草木灰带回学校进行了实验探究.

【提出问题】草木灰的主要成分是什么?

【查阅资料】小红经查阅资料得知:草木灰的主要成分是一种含钾离子的盐,易溶于水.

【进行猜想】草木灰的主要成分(1)可能是硝酸钾;(2)可能是碳酸钾.

【实验用品】草木灰、蒸馏水、稀盐酸、澄清石灰水、烧杯、漏斗、试管、橡皮塞、导气管等.

【设计实验方案】请你针对猜想设计实验方案,并进行实验.

实验步骤实验现象实验结论
(1)取一定量的草木灰于烧杯中,加入适量蒸馏水,搅拌,然后进行______操作.

得到无色溶液

(2)取少量无色溶液于试管中,然后滴加几滴酚酞试液

溶液变红色

溶液显______性.

(3)取少量无色溶液于试管中,然后加入少量______;有______产生;

澄清石灰水______

有______生成,

草木灰的主要成分是碳酸钾,猜想(2)成立

【实验反思】(1)写出上述实验中有关反应的化学方程式是:①______;②______.

(2)草木灰的主要成分是碳酸钾,它能否与铵态氮肥混合使用?______;原因是______.

题型:选择题

One of the most difficulties in learning a language is learning the idiomatic phrases, slang and common usage of native speakers. These four books focus on giving students a hand when learning North American idiomatic language.

Ya Gotta Know It by Hania Hassan

It provides an excellent mixture of materials for classroom lessons and American slang reference. Its unique feature is that students are provided with ongoing (持续不断的) context reminding learners of idioms learned while improving their understanding by using the same characters and a developing story line. Exercises provide a chance for students to practice in proper situations.

Price: $11.66

ISBN: 9780074560167

Common American Phrases by Richard A. Spears

It has a wide variety of resources on American English. It contains more than 2,000 phrases and idioms. Excellent for classroom use as this reference guide focuses on standard phrases that can be found in everyday standard usage.

Price: $ 7.06

ISBN: 978007405607

American Idioms and Some Phrases Just for Fun by Edward Swick

The book’s strength is its translation of more formal English of a number of idioms. These phrases are then repeated in a number of different contexts giving students a good idea of common usage. There are also a number of exercises designed to help students put their newfound idiomatic understanding into use.

Price: $ 5.49

ISBN: 9780764108075

American Slang by Robert L. Chapman

It provides a guide for advanced level English students. This references guide to slang is best used by those interested in the very latest and up-to-date slang and slang you might hear in the laterst films from Hollywood.

Price: $ 1.99

ISBN: 9780062731722

小题1:The purpose of writing the passage is _______.

A.teach students how to learn idioms

B.introduce books to readers

C.increase students’ knowledge about idioms

D.offer learning materials to readers for free小题2: In what way is Ya Gotta Know It different from other books?

A.It contains a lot of exercises.

B.It has the largest number of idioms.

C.It is mainly about American slang.

D.It offers readers ongoing context.小题3:If you want to learn the slang from the latest Hollywood films, you can choose _______.

A.American Slang

B.Ya Gotta Know It

C.American Idioms and Some Phrases Just for Fun

D.Common American Phrases

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下列关于靶向制剂的概念正确的描述是()。

A、靶向制剂又叫自然靶向制剂

B、靶向制剂是指进入体内的载药微粒被巨噬细胞摄取,通过正常生理过程运至肝、脾等器官的剂型

C、靶向制剂是利用某种物理或化学的方法使靶向制剂在特定部位发挥药效的制剂

D、靶向制剂是通过载体使药物浓集于病变部位的给药系统

题型:选择题

二十四史里的《三国志》有大量的文献(一半以上)是()用小字注的。

A、陈寿

B、班超

C、裴松之

D、班固

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