1. In the science lab, you should know the location and use of the eyewash, _______, and fire extinguisher. *

explode

first aid kit

experiment

work bench

Mục khác:

2. You are advised to wear a lab coat and ________ to protect you from dangerous chemicals. *

safety glasses

tongs and test tubes

equipment

work bench

Mục khác:

3. You should use __________ when heating a test tube. *

safety glasses

tongs

lab coat

eyewash

Mục khác:

4. Sunscreen protects you against the sun’s harmful ____________. *

oxybezone

titanium oxide

ultraviolet rays

inorganic and organic ingredients

Mục khác:

5. Birds do not _______________ when sitting on power lines. *

get sunburned

get exhausted

get electrocuted

Mục khác:

Chia động từ trong ngoặc về thì quá khứ đơn hoặc hiện tại hoàn thành. Policeman: Mr. Leach, how many times (1) ____________(you/be) in prison? Jim Leach: Twice. Policeman: When (2) ______________ (you/finish) your last prison sentence? Jim Leach: I (3) ______________ (come) out of prison about 6 months ago. Policeman: How long (4) _____________ (you/live) in this town? Jim Leach: About 7 years. I (5) _____________ (move) here when I got married. Policeman: So you (6) ____________ (be) married for seven years. Jim Leach: No, my wife (7) _____________ (leave) me two years ago. Policeman: (8) _______________ (you/see) her in the last few weeks? Jim Leach: No, she (9) ______________ (phone) me a few days ago. I (10) _____________ (meet) her once about a year ago, but I (11) _______________ (not/see) her since then

. Chia động từ trong ngoặc về thì quá khứ đơn hoặc hiện tại hoàn thành. Policeman: Mr. Leach, how many times (1) ____________(you/be) in prison? Jim Leach: Twice. Policeman: When (2) ______________ (you/finish) your last prison sentence? Jim Leach: I (3) ______________ (come) out of prison about 6 months ago. Policeman: How long (4) _____________ (you/live) in this town? Jim Leach: About 7 years. I (5) _____________ (move) here when I got married. Policeman: So you (6) ____________ (be) married for seven years. Jim Leach: No, my wife (7) _____________ (leave) me two years ago. Policeman: (8) _______________ (you/see) her in the last few weeks? Jim Leach: No, she (9) ______________ (phone) me a few days ago. I (10) _____________ (meet) her once about a year ago, but I (11) _______________ (not/see) her since then.