The conservationists said “ We are going to carry out some experiments on these animals.
 

The conservationists said that they are going to carry out some experiments on those animals. 

The conservationists said that they were going to carry out some experiments on those animals. 

The conservationists said that they will be going to carry out some experiments on these animals. 

The conservationists said that they will carry out some experiments on those animals. 

Choose the correct sentence which is closest in meaning to the given one.
We left the building, then a tornado appeared suddenly and caused life loss and property damage. 

before a tornado appeared suddenly and caused life loss and property damage, we had left the building. 

A tornado appeared suddenly and caused life loss and property damage after we had left the building.

A tornado appeared suddenly and caused life loss and property damage as soon as we had left the building. 

All the answers are correct. 

Choose the correct sentence which is closest in meaning to the given one.
1.Unfortunately, we won’t be attending the meeting at that time since we will be in Paris

Unfortunately, we won’t be attending the meeting at that time because we will be in Paris. 

Unfortunately, we won’t be attending the meeting at that time because of we will be in Paris. 

Unfortunately, we won’t be attending the meeting at that time due to we will be in Paris. 

Unfortunately, we won't be attending the meeting at that time thanks to we will be in Paris. 

Biết nhiệt dung riêng của nước là 4200 J/kg.K. khối lượng riêng của nước là 1000 kg/m3. Nhiệt lượng cần thiết để đun sôi 2 lít nước ở nhiệt độ ban đầu 20 độ C là?

840 J

672 kJ

672 J

8400 kJ