For each of them there are four choices marked A, B, C and D. You should decide on the best choice and mark the corresponding letter on Answer Sheet 2 with a single line through the centre.
每题都有对应标记的A、B、C和D四个选项，请选择最佳选项并在答题卡2的相应字母中间划横线。
2
Heels not only have to be the right height but in the right position: not too far back, but under the centreof the heel so they support your weight properly, following the natural line of your body.
Once completed, the new airport will be connected to a new expressway and high-speed train line that will speed travellers to the centreof the city in 30 minutes.