Highlights
Our Sun's a Super Star
Ken Croswell, Ph.D
Science & Nature
sun, star, nuclear fusion
HL
842
B2
English
9781683291855
The Sun is a star, like the ones you see in the sky at night. Why is our bright yellow Sun much better than an average star?
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 | 0.03% |
| Eiken Grade 2 | 866 | 0.46% |
| Eiken Grade 3 | 900 | 8.67% |
| Eiken Grade 4 | 600 | 13.83% |
| Eiken Grade 5 | 600 | 14.67% |
| Eiken Grade Pre1 | 2,868 | 0.28% |
| Eiken Grade Pre2 | 1,327 | 1.51% |
| Eiken Grade Pre2+ | 1,562 | 2.05% |
| NDL | 875 | 18.97% |
| NGSL 1 to 1,000 | 1,000 | 15.9% |
| NGSL 1,001 to 2,000 | 1,000 | 3.9% |
| NGSL 2,001 to 3,000 | 801 | 1.12% |
| 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% |