阅读问题

CarrieyouyouUID: 2120556

1.0310 35题
The essential difference is that a speech event is an evolving communication, an “emergent form”

Q: What can be inferred about the nature of the Native American literature discussed in the passage?
A.        It reflects historical and contemporary life in Asia.
B.        Its main focus is on daily activities.
C.        It is based primarily on scientific knowledge.
D.        It is reshaped each time it is experienced.

答案为什么是d?

0209 11题
These kind of pottery were produced to supplement imported european pottery

Q:why did the potters discussed in the passage change the kind fo pottery they made?
A: They discovered a new kind of cly.
B: They were compensation for the loss of an overseas supplier.
C: They studied new techniques in Europe.
D:The pottery they had been producing was not very strong.

答案为什么是B supplement imported european pottery 怎么解释呢？

0209 43
Squirrels may devour many acorns, but by storing and failing to recover up to 74 percent of them ( as they do when seeds are abundant).

Q: According to the passage, what do squirrels do when large quantities of acorns are available?
A.        They do not store acorns.
B.        They eat more than 74 percent of available acorns.
C.        They do not retrieve all the acorns that they have stored.
D.        They hide acorns in tree cavities.

R: retrieve v.重新得到 n.找回 recover v.重新获得 为什么答案是c 我认为答案应该取反，请解释一下文中的那句话

The broad utility of terra-cotta was such that workers in clay could generally afford to confine themselves to either decorated ware and housewares like cooking pots and storage jars or building materials like roof tiles and drainpipes.

陶制品的使用是如此的广泛以至于陶土工人们一般都可以把自己限制在要么专做装饰用陶器和家庭用陶器，要么专做建筑用陶器，即使这样，他们也能负担起自己的各项消费。

为什么后者就能说明陶制品的使用广泛呢？