十二 新趋势 学科融合 阅读短文,完成下列任务。(12分)
This is a weekend. Roy watches his father raise a knife and bring it down at the centre point of a pizza. The pizza is sliced in two. Roy isn't sure this is helping him with his Maths homework, but his dad insists(坚持).
“How many pieces do I have now, Roy?” Dad asks. “Two,” says Roy. “Right. So what do we call each piece?” “A half,” answers Roy. Dad nods, raises the knife again and slices each half in half again. “Half of a half makes what?” Roy thinks for a while. “Each one is a quarter, right?” Dad smiles. “But how about a half of a quarter?” “I don't know,” says Roy. “Sure you do. Think about this. We have a half. A half is 1 over 2. Then we have a quarter. It is 1 over 4. If the bottom number(底数) doubles, what would it be?” Roy starts to think. The bottom number, the denominator(分母) of the fractions(分数), goes from 1 to 2 to 4. It is doubling(加倍). “Each piece is an eighth, 1 over 8.” Dad smiles and then cuts each eighth in half. “Now then, what is half of an eighth?” “Double eight is sixteen, so it's a sixteenth.” Roy answers confidently(自信地). “Exactly. You get fractions now. Let's eat the pizza!” Dad says.
(一)阅读短文,选择正确的答案。(6分)
(
C
)1. What subject does Roy need his father to help with?
A. Art. B. Science. C. Maths.
(
C
)2. After the fourth time the pizza is cut in half, how many pieces are there?
A. Four. B. Eight. C. Sixteen.
(
B
)3. To get the answer of 32 in the end, how many times will the pizza pieces have to get cut in half?
A. Four. B. Five. C. Six.
(二)阅读短文,根据所给的分数,画出正确的切割图。(6分)
1.

$\frac{1}{2}=$one half
2.

$\frac{1}{4}=$one fourth
3. $◯$ $\frac{1}{8}=$one eighth