V. You can use reduced relative clauses in five of these sentences. Find the sentences and rewrite them using reduced relative clauses.
1.The Hydro-X is a car that runs on hydrogen fuel.
2. The oil rig which I worked on was located in the North Sea.
3. The motor, which is located between the front wheels, provides high output.
4. Cromoly is an alloy which is made from ceramic and steel.
5.The robot which I use can climb to the top of high-rise buildings.
6. They visited the building which was destroyed in the earthquake.
7.Cars emit greenhouse gases that go into the atmosphere.
VI. Complete each sentence with the modal verb in brackets in the active or passive form.
1. Itís not necessary to finish the job today.
You __________________ (neednít)
2. Itís essential to carry these objects carefully. Theyíre fragile.
These objects _______________ (must)
3.Itís essential to check the equipment every day.
The equipment ______________ (have to)
4. Itís a good idea that Jamal wears gloves when he operates the machine.
Jamal ___________________ (should)
5.We recommend that you do not leave tools on the ground.
Tools ________________ (should not)
VII. Underline the correct word.
1. This bag is heavyer/heavier than 10 kg. Iím sorry, you canít take it on the plane.
2.I need a thiner/thinner wire than this one. Itís too thick.
3.The highest/most high building in Taiwan is Taipei 101.
4.Letís buy the less expensive/the least expensive phone.
5.The car is not enough big/not big enough to carry all the equipment.
VIII. Complete the sentences with the words in brackets. Use the affirmative or negative.
1.If there _____ a fire in the building, _________ the lifts. (be/use)
2.If someone _________ their leg, ________ them. (break/move)
3.If someone __________ their hand, _________ it with cold water immediately. (burn/cool)
4.If you _________ chemicals in your eye, ________ the eye out with sterile fluid for 10 minutes. (have/wash)
5.If you___________ in a lightning storm, ________ under a tree. (be/stand)
Part 2. Reading and writing
Read the text and answer the questions.
Automotive manufacturers in America are developing cars that can drive themselves. They can travel around city streets without crashing into vehicles, trees or other obstacles. One of the cars named ĎBossí can travel 85 km with no driver at the controls.
A driver follows behind the robot car in a support car. The driver can stop the robot car immediately by using a kill-switch when the car is in danger of crashing.
The driver knows that the robot car is in danger of hitting things by means of sensors. These sensors are mounted on the roof of the robot car, one on each of its four corners, and in the bumpers. By using an algorithm to read the data from the radar sensors and cameras, the driver knows where fixed and moving objects are. ĎBossí has a Lidar scanner. This scanner has 64 individual lasers. By rotating at about 10 times a second, the scanner can take about a million measurements. These measurements warn the driver in the support car about any objects that are near the robot car and the exact distance these objects are from the car.
1. Who drives the robot cars?
2. What can the robot cars do?
3. How does the driver in the follow-up car stop the robot car?
4. How does the driver know that the robot car is in danger of hitting things?
5. How does the driver know how far objects are from ĎBossí?