Hỗn hợp X gồm 2 muối calcium haidle của halogen thuộc 2 chu kì liên tiếp. Cho 25.55 gam X vào dung dịch AgNO3 dư, sau phản ứng thu được 51,95 gam hỗn hợp kết tủa. Xác định tên 2 halogen trên.

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2. Use the superlative / comparative / as .. as / enough / too of the words in the box. You can use the word two times. 

1. The clock tower is _________________ than the school. It's also _____________________. 

2. The _________________ way to travel from Singapore to Thailand is by plane. 

3. I love to travel. My_____________________________ trip was to Brazil. 

4. The train tickets were ________________ than the bus tickets. I never expected that! 

5. Big Ben is probably _____________________________ clock tower in London. 

6. The Channel Tunnel between England and France has 

_____________________________ underwater section in the world. 

7. The Channel Tunnel isn't _____________________________ the Seikan Tunnel in Japan. 

8. Tokyo Tower is taller _____________________________ the Eiffel Tower. 

9. Swimming is not allowed in this river because the water current is _____________________________. 

1. Complete the blog post. Use the correct forms of the words in parentheses.

My trip to Las Vegas has been just ________________  (fun) I hoped. This must be the ________________ (interesting)city in the U.S.! It's full of weird buildings.  There's a huge black pyramid here called the Luxor. There's also an Eiffel Tower. It's not  ________________ (tall) the real one in Paris, but it's very cool.  I think my favorite spot so far is the 350-meter-high Stratosphere. It's  __________________ (tall) tower in the U.S.A. On top of it is a ride called Insanity . The ride  sends you out over the tower so there is nothing below you except the city. I didn't do it. I  wasn't ________________ (brave) .  I love it here. My only complaint is the weather. It's so much ________________ (hot) here.  Today was over 40 degrees Celsius!  

Bài  3:  Finish  the  sentences  using  the  

Skycraper      underground    cruise      tunnel      station     elevator

1. The train _______________ is usually crowded in the morning. 

2. Titanic was one of the largest _______________ ships to sail in 1912. 

3. The _______________ broke down this morning, so I had to climb the stairs to get to the tenth loor! 

4. Archeologists discovered an _______________ tomb in the ruins of an ancient city. 

5. An undersea _______________ connects the two islands. Buses and cars drive through it every day. 

6. José went to the observation deck at the top of the _______________ to view the entire city.