3.___________
The ideal sunscreen to use is an SPF15. This means a sunscreen which gives you fifteen times more protection that you would have normally. An SPF15 sunscreen will absorb proportionally equal amounts of UVA and UVB, and will give you good protection if you are sensible about your exposure. Sunscreens higher than SPF15 tend to lose their balanced effect: the chemicals in an SPF30, for example, will not block UVA rays as effectively as UVB. The other danger with high SPFs is that people will stay in the sun longer because they think are better protected. Higher SPFs do not give proportionately greater protection. An SPF15 gives 93 percent protection, for example, while an SPF34 gives 97 percent protection.
Giải bởi Vietjack
Chọn D
We must continue our efforts, whether there are problems or not.
Regardless ___________________________________________.
“ Less noise!” the teacher told the boys.
The teacher shouted_______________.
To find new fuels it is necessary to spend a lot of money.( means)
Finding_____________________________________money.
Dan promised sincerely that he wouldn’t watch so much TV. (sincere)
Dan________________________________________not to watch so much TV.
There has to be this starting and stopping movement __________the eye can only see only when it is not moving.
Choose the best option to complete each of the following sentences.
To meet this __________, we have brought 3 ships into regular operation.
This is not the right ___________to ask for my help; I’m far too busy even to listen.
The cost of living has gone up considerably in the last few years.
There________________________________________________
“________to Japan?” – “Yes, I _________there the year when there was an earthquake.”
“No one can persuade me to sleep in that haunted house,” she said.
She flatly_____________________________________________.
Rewrite the following sentences, using key words in the parentheses or the suggested phrases given at the beginning of the sentences
Jack has become confident as a result of his success. (turned)
Jack’s success______________________________person.
