坐沙发要比坐板凳舒服，这主要是因为沙发较易发生形变，增大了人与沙发间的____，在压力不变的情况下，____压强．

根据短文内容，请将单词填写在题号对应的横线上。
    We're offering free tickets to go and see a film called A Year in Greenland. The film, which ____ (tell) you all about the plants and animals in that wonderful country, has won ____ prize at the national film festival- it's well worth ____ (see).
    The film can only be seen at the new cinema that has just been completed inside the Science Museum in the city centre. It's showing this Sunday with ____ (perform) every hour from midday onwards, with the last showing at 5 o'clock, two hours before the museum closes. So there are six times to choose ____.
    So why not take the whole family to the cinema this Sunday. Children will want to head straight down to the basement ____ the computers are kept. I promise you they'll come away with all sorts of ____ (excite) pictures they've created.
    Entrance to the museum is free on Sundays, but it would ____ (normal) cost ﹩3.25 to go and see the film. ____ (get）your free tickets, you should e-mail this program by midday on Friday. We've only got a limited number of tickets, so the ____ (early) you e-mail us, the more likely you are to get one.

English is interesting, _____ I didn't like it at first.

下列语句中，加点的词语使用不恰当的一项是  

可逆反应mA(g)＋nB(g)  pC(g)+qD(g)的v-t图象如下右图，如若其它条件不变，只是在反应前加入合适的催化剂，则其v-t图象如下右图：

①a₁>a₂ ②a₁<a₂ ③b₁>b₂ ④b₁<b₂ ⑤t₁>t₂⑥t₁=t₂  ⑦两图中阴影部分面积相等  ⑧右图中阴影部分面积更大，以上说法中正确的是（    ）