语法填空
Do you know the UK government has____(successful) passed a law banning branding on packs of cigarettes? That means tobacco manufacturers will be forced____(pack) their cigarettes in plain packets.
The motivation behind this____(decide) is to make smoking less appealing to people, especially children.
A similar law____was passed in Australia in 2012 has resulted____a fall in smoking rates from 15.1% to 12.8% for people aged 14.
As of January 2015, 22% of adult men and 17% of adult women smoke in Great Britain. The possibility of smoking in the UK increases with age so that by 15 years of age 8% of school children____(be) regular smokers. Children, it is thought, will be less attracted to cigarettes____(sell) in unbranded boxes.
Smoking is one of____biggest causes of preventable deaths in England. Every year about 80,000 die and over 450,000____(send) to hospital due to smoking. This places a large strain on the health service and is also a factor in why the government would like to prevent people from____(take) up smoking or help them quit.
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）是否能使酸性KMnO4溶液褪色，先将环戊烯溶于适当的溶剂，再慢慢滴入0.005mol•L﹣1KMnO4溶液并不断振荡．下列哪一种试剂最适合用来溶解环戊烯做此实验（ ）