-A ruler is 2 dollars and a pen is 5 dollars. How much are they? -They are               
#51155
A
$22
B
$3
C
$7
D
$5
推荐题目
They watch TV__________. 
#51618
A
one a week
B
once a week
C
one the week
D
once week
The doctor tells me I should eat ______ meat and take ______ exercise.
#51637
A
a little, a few
B
less, more
C
many, much
D
much, many
Liu Ming wants to buy some school things. According to the list, if he buys twelve exercise books, four knives, five pens, double rulers and a pencil-box, he will pay    .A. 140 yuan       B. 84 yuan        C. 56 yuan
#51564
A
ing
B
ife
C
n
D
cise book
E
r
F
il-box
G
ice
H
.50
I
5.00
J
.00
K
.50
L
6.00
M
news : If you spends more than one hundred yuan in buying pens, you will enjoy a 40% off for the whole list.
The earthquake killed ____   ___ .people .
#51254
A
thousand
B
three thousands
C
thousands of
D
three thousands of .