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phamquockhaipro
2 năm trước
Cần sử dụng bao nhiêu ml dd NaOH 0,5M để trung hoà 250ml dd X chứa HCL 2M và H2SO4 1,5M
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điền từ thích hợp: BATS bats are very interesting animals. they live in caves or 1. in trees. they sleep........... the ay and only 2. wake up in........ evening 3. ........... it is dark, they fly out of their caves 4. and insects, which are their food. 5. some bats........ eat fruits in the jungle. 6. Most bats can't see very well but ............ have big ears and hear everything. 7. Many young and old people are afraid ....... bats 8. because they think they ....... al in their hair or on their face.......... bats are cleverer 10 ............ peoples think, an they fly very well and very fast. PHẦN TỪ ĐỂ ĐIỀN 1. during at until 2. one the some 3. already soon when 4 catch catches caught 5. so also to 6. they it you 7. for in of 8. do might should 9. but and if 10. that than then

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