根据句意和所给首字母补全单词。（共15题，每小题1分，满分15分）
1.Milk, water and oil are all l_____ while wood, iron
and glass are solids.
2.You can easily find the site by entering the
k_______ “Quark”.
3.Water is recognized as the s_____ of all life.
Without it, there would be no life.
4.She was born in a (富裕的) family.
5.The old man had no a________ to education when he
was young.
6.Helen is____________ (担心的)
about traveling on her own.
7.I think it’s only an o_________ camera and I needn’t
pay such a high price for it.
8.Living in the business d_______ of a city provides a
great convenience for shopping.
9.As students, we must c____________ our attention on
our lessons.
10.People are concerned about the quality of the air
they___________ (呼吸).
11.Children should be encouraged to be __________（独立的）thinkers.
12.Helen is the most diligent shop____________ (助手) that I have ever seen.
13.She lost the d_______ necklace that she borrowed
from one of her friends.
14.She has read many of the major works of _________ (文学).
15.The _________ (百分率) of
overweight people around the world has been increasing these years.
