Highlights
A Slick Little Robot
Harry T. Roman
Science & Nature
Science Inventions Technology, Oil Tank, Robot, Cleaning
HL
968
C1
English
9781682382493
There are many useful robots that help people around the world. A robot called OTIS is one of them that keeps oil tanks clean, saving time and money. It was designed to inspect the surface of the tank floor instead of people having to work inside the tanks for a long time.
Word lists coverage
The word and grammar lists are compiled from commercially available resources and English study websites. They are not intended to be authority. Use at your own discretion.| List | Total | Coverage |
|---|---|---|
| Eiken Grade 1 | 3,105 | 0.06% |
| Eiken Grade 2 | 866 | 0.81% |
| Eiken Grade 3 | 900 | 11.11% |
| Eiken Grade 4 | 600 | 15.33% |
| Eiken Grade 5 | 600 | 18.17% |
| Eiken Grade Pre1 | 2,868 | 0.14% |
| Eiken Grade Pre2 | 1,327 | 2.19% |
| Eiken Grade Pre2+ | 1,562 | 3.01% |
| NDL | 875 | 23.31% |
| NGSL 1 to 1,000 | 1,000 | 19.8% |
| NGSL 1,001 to 2,000 | 1,000 | 5.3% |
| NGSL 2,001 to 3,000 | 801 | 2% |
| NGSL Supplemental | 52 | 13.46% |
Grammar lists coverage
The word and grammar lists are compiled from commercially available resources and English study websites. They are not intended to be authority. Use at your own discretion.| List | Total | Unique | Coverage | Unique |
|---|---|---|---|---|
| Eiken Grade Pre1 | 94 | 94 | 0% | 0% |
| Eiken Grade 2 | 123 | 122 | 0% | 0% |
| Eiken Grade Pre2 | 111 | 108 | 0% | 0% |
| Eiken Grade 3 | 48 | 47 | 0% | 0% |
| Eiken Grade 4 | 52 | 49 | 0% | 0% |
| Eiken Grade 5 | 176 | 139 | 0% | 0% |
| A1 | 352 | 316 | 0% | 0% |
| A2 | 949 | 893 | 0% | 0% |
| B1 | 1,126 | 1,106 | 0% | 0% |
| B2 | 775 | 760 | 0% | 0% |
| C1 | 402 | 395 | 0% | 0% |
| C2 | 312 | 308 | 0% | 0% |