評(píng)論
打印
1.How many times more trees are there than we thought?
a) 7
b) 8
c) 9
d) 10
2.How many trees did scientists originally think we had?
a) 200 billion
b) 300 billion
c) 400 billion
d) 500 billion
3.How many trees do scientists now think we have?
a) 6 trillion
b) 5 trillion
c) 4 trillion
d) 3 trillion
4.How many trees are there for each person in the world today?
a) 410
b) 420
c) 430
d) 440
5.What did a scientist say the new number of trees would change?
a) nothing
b) trees
c) everything
d) populations
6.How many trees were there on Earth thousands of years ago?
a) 3 trillion
b) 4 trillion
c) 5 trillion
d) 6 trillion
7.What does the article say Europe use to be?
a) a desert
b) united
c) a giant forest
d) islands
8.How many trees are humans destroying each year?
a) 14 billion
b) 15 billion
c) 16 billion
d) 17 billion
9.What period of time did scientists compare the annual loss of trees to?
a) a thousand years ago
b) 500 years ago
c) 100 years ago
d) 10 years ago
10.What is needed to restore healthy forests worldwide?
a) money
b) effort
c) ideas
d) seeds
