【单选题】水通过()的作用可与另外4个水分子配位结合形成正四面体结构。
【单选题】水通过()的作用可与另外4个水分子配位结合形成正四面体结构。
【单选题】水通过()的作用可与另外4个水分子配位结合形成正四面体结构。
【简答题】Fill in the blank in each sentence with a word or phrase taken from the box.
【单选题】水通过( )的作用可与另外( )个水分子配位结合形成正四面体结构。
【简答题】Make the correct choice to fill in the blank in each sentence.
【单选题】Which word is the best to fill in the blank in the last paragraph?
【单选题】Fill in the blank in each sentence with a word or phrase taken from the given words in appropriate form.
A.
hool trips give children _______experience not available in the classroom.
J.
acquisition K. routine
【简答题】Fill in the blank in each sentence in Group 1 with a word taken from Group 2.
【单选题】Fill in the blank in each sentence with a word or phrase taken from the given words in appropriate form.
A.
cond language _______ is the most important part in language learning.
J.
acquisition K. routine