The word “they” in the first paragraph refers to ________.  
A. the earliest books for children 
B. illustrations
C.the Caldecott “toy books”             
D.lines of text

When did illustrations become important in books for children?  
A.In late 19th century 
B. In 1937
C.Only recently               
D. In 1957

The water temperature in a spring depends on that of the soil through where the water flows.
A.a spring
B.on that
C.where 
D.flows

Wealthy people have always desired and wear precious stones because their beauty is lasting.
A.Wealthy
B.and wear
C.their beauty
D.lasting

By measuring the color of a star, astronomers can tell how  hot is it.
A.measuring
B.the
C.how
D.is it

All of the cities in Texas, San Antonio is probably the most picturesque.
A.All of 
B.in Texas
C.is probably 
D.most picturesque

The students who are revising for their exams are used to stay up late.
A.who
B.are revising
C.for
D.used to stay

In remote communities, it's important to replenish stocks before the winter sets in.
A.remake      
B.empty    
C. refill  
D.repeat

In remote communities, it's important to replenish stocks before the winter sets in.
A.remake      
B.empty    
C. refill  
D.repeat

A.depends          
B.years        
C.temples      
D.parents