你可能感兴趣的试题
rickets and osteoporosis. heart attacks. rheumatic diseases. skin damag
relate relating related to relate
Darker skinned people. The older people. Lighter skinned people. People who live in northern areas.
An average of 66,000. Approximately 130,000. About 196,000. Between 2,000,000 to 3,000,000.
weren’t ; would die were’t; will have died hadn’t been; would die hadn’t been; would have died
We know how people began to use fire. Nobody knows how to make a fire. It was an Australian who started a fire. We are not sure how people started a fir
will die will warm our houses might burn us will help us
were not , would die were not to be, would die should not be ,would have died hadn’t been ,would have died
Too much Vitamin D may cause skin cancer. Sunlight is the easiest way to get vitaminD. Few kinds of food naturally contain vitamin D. The older people need more vitamin D than the yout
Tuna and mackerel. Fish liver oils. Beef liver. Milk with the vitamin adde
will die will warm our houses might burn us won’ t help us
We know how people began to use fire. Nobody knows how to make a fire. It was an Australian who started a fire. We are not sure how people started a fire.
Not everybody knows how people began to use fire. Nobody knows how to make a fire. It is an Australian who started a fire. We are not sure how people began to use fir