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(3分) 蛋白質(zhì)是由多種氨基酸構(gòu)成的極為復(fù)雜的化合物。丙氨酸是眾多氨基酸中的一種，其化學(xué)式為，丙氨酸的組成元素有_______種，一個丙氨酸分子中共有________個原子。相對分子量       

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3月29日是校園安全教育日，請你以“創(chuàng)建平安校園”為主題，根據(jù)以下三個方面的提示寫一篇英語演講稿。

How to keep safe in school
In P.E. classes
In the dining hall
In the science lab
wear sports shoes
do warming up exercises
…
don’t run
wait in line
…
keep your hands away from
don’t work alone
…
注意：文中不得出現(xiàn)真實的姓名、學(xué)校名；80-100詞左右，短文開頭已給出，不計入總詞數(shù)。
Hello, everyone! It’s very important for us to keep safe in school.                               
                                                                                  
                                                                                  
                                                                                  
                                                                            

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3月29日是校園安全教育日，請你以“創(chuàng)建平安校園”為主題，根據(jù)以下三個方面的提示寫一篇英語演講稿。

How to keep safe in school

In P.E. classes

In the dining hall

In the science lab

wear sports shoes

do warming up exercises

…

don’t run

wait in line

…

keep your hands away from

don’t work alone

…

注意：文中不得出現(xiàn)真實的姓名、學(xué)校名；80-100詞左右，短文開頭已給出，不計入總詞數(shù)。

Hello, everyone! It’s very important for us to keep safe in school.                               

                                                                                  

                                                                                  

                                                                                  

                                                                            

 

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3-junior high school life will be over . I will remember those things and teachers _____ are unforgotten .

A．who B．which C．that D．whom

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3, He speaks ______English ______French. Instead, he speaks German.

A either;or             B not only; but also

C both;and             D neither; nor

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